regional jet crash? (American Airlines) at Reagan (DCA)

189,849 Views | 1557 Replies | Last: 16 hrs ago by titan
Catag94
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Question:
Would it be a common practice for the BH crew to use radar altitude and in so doing, stay over the river to prevent terrain fluctuations?
bobbranco
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GAC06 said:

Yeah that's not how it works. They collided and it looks to me like the main rotor of the helo took the brunt of the impact

Explain how it works.

UH60 weighs about 20,000 lbs.

CRJ700 weighs about 70,000 lbs.

Show your work.
bobbranco
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Matt_ag98 said:

fullback44 said:

MarkTwain said:


Most realistic version of what happened for people like me that are just the average person (not pilots) wondering what happened, seems a few mistakes here and there added up along with possible bad vision due to night time. They need to make changes to the rules where they let those Helos fly, get them away from that airport. Something tells me the Helos will begin to fly quite a bit east of the Patomic.


I go over the Potomac river twice a day for work(near DCA) and honestly don't ever remember seeing any regular helicopter traffic except the Marine Corps One (Squadron/Detachment?) flying back and forth. I mean Joint Base Anacostia Boling is right there also, but don't know how much helicopter traffic it gets honestly
25 yrs ago last year I flew in and out of DCA frequently, the helicopter traffic was heavy and pilots I met said it was a wreck waiting to happen in 2000.
GAC06
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bobbranco said:

GAC06 said:

Yeah that's not how it works. They collided and it looks to me like the main rotor of the helo took the brunt of the impact

Explain how it works.

UH60 weighs about 20,000 lbs.

CRJ700 weighs about 70,000 lbs.

Show your work.


I've seen nothing indicating that the CRJ broke apart before hitting the water. The fact that it's in multiple pieces whereas the helo fuselage is mostly intact doesn't mean anything as far as "who hit who". Thanks for the homework assignment though.
Psycho Bunny
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bobbranco said:

GAC06 said:

Yeah that's not how it works. They collided and it looks to me like the main rotor of the helo took the brunt of the impact

Explain how it works.

UH60 weighs about 20,000 lbs.

CRJ700 weighs about 70,000 lbs.

Show your work.
"All the gods, all the heavens, all the hells are within you". Joseph Campbell
bobbranco
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GAC06 said:

bobbranco said:

GAC06 said:

Yeah that's not how it works. They collided and it looks to me like the main rotor of the helo took the brunt of the impact

Explain how it works.

UH60 weighs about 20,000 lbs.

CRJ700 weighs about 70,000 lbs.

Show your work.


I've seen nothing indicating that the CRJ broke apart before hitting the water. The fact that it's in multiple pieces whereas the helo fuselage is mostly intact doesn't mean anything as far as "who hit who". Thanks for the homework assignment though.
It's not a homework assignment. All has been documented on this thread.

You must be blind. The UH60 stops almost immediately after flying into the starboard side of the CRJ.

The CRJ reportedly broke into 3 parts. 2 parts of the CRJ are clearly splashing into the water.

GAC06
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The 60 doesn't stop, it continues its momentum into the water. The jet was also moving faster than the helo, and to me it looks like the right wing of the CRJ hit the rotor of the helo from that dark, grainy video.
fc2112
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AggieFlyboy said:

fc2112 said:

AggieFlyboy said:

People don't understand military aviation. At 300 hrs total flight time, I was flying combat missions in Afghanistan. At 700 hrs I was sitting left seat. Military flight training is a crucible; there is a reason the FAA allows airlines to hire a military pilot at 750 hrs vs the 1500 required for non-military
And yet she flew straight into an airliner right in front of her.


Unfortunately, I've seen a lot of highly skilled aviators make stupid mistakes. Some costing them the aircraft or their lives. Sadly in this case, it cost 67 more

The way forward is to learn from those mistakes and take actions that help prevent those mistakes from happening again
I agree with this wholeheartedly.

I work in aircraft design, and we design to probabilities. I realize there there are "bad days" and sometimes all the swiss cheese holes line up.

that being said - if it's this easy for a helicopter with 3 highly trained individuals flying it to drift right up into the path of a commercial airliner, I'm gonna suggest Route 4 should not exist.

Military pilots know that bad days exist and sign up for it knowingly. Commercial airline passengers do not.
bobbranco
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GAC06 said:

The 60 doesn't stop, it continues its momentum into the water. The jet was also moving faster than the helo, and to me it looks like the right wing of the CRJ hit the rotor of the helo from that dark, grainy video.
UH60 had the right of way? You are making no sense. Who cares if the starboard wing hit a rotor?
GAC06
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Quote:

UH60 had the right of way?


Did I say that?
bobbranco
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fc2112 said:

AggieFlyboy said:

fc2112 said:

AggieFlyboy said:

People don't understand military aviation. At 300 hrs total flight time, I was flying combat missions in Afghanistan. At 700 hrs I was sitting left seat. Military flight training is a crucible; there is a reason the FAA allows airlines to hire a military pilot at 750 hrs vs the 1500 required for non-military
And yet she flew straight into an airliner right in front of her.


Unfortunately, I've seen a lot of highly skilled aviators make stupid mistakes. Some costing them the aircraft or their lives. Sadly in this case, it cost 67 more

The way forward is to learn from those mistakes and take actions that help prevent those mistakes from happening again
I agree with this wholeheartedly.

I work in aircraft design, and we design to probabilities. I realize there there are "bad days" and sometimes all the swiss cheese holes line up.

that being said - if it's this easy for a helicopter with 3 highly trained individuals flying it to drift right up into the path of a commercial airliner, I'm gonna suggest Route 4 should not exist.
There have been reported near misses in the past. I wonder if standard procedure was to stop Route 4 traffic temporarily when aircraft are on approach and somehow the procedure was relaxed.
ArmyAg2002
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fixer said:

ArmyAg2002 said:

fc2112 said:

ArmyAg2002 said:

fc2112 said:

AggieFlyboy said:

People don't understand military aviation. At 300 hrs total flight time, I was flying combat missions in Afghanistan. At 700 hrs I was sitting left seat. Military flight training is a crucible; there is a reason the FAA allows airlines to hire a military pilot at 750 hrs vs the 1500 required for non-military
And yet she flew straight into an airliner right in front of her.


No, SHE didn't. A Blackhawk had a mid-air collision. You don't know who was on the controls and neither do I. I do know there was a crew on board and two pilots that both had access to the controls were killed when their helicopter struck another aircraft. There is nothing to indicate, as you insinuate, that it was intentional.

If she was on the controls and as poor of a pilot as you believe, how was she skilled enough to hit another aircraft?


I said nothing about intentionality. I think those suggesting this was insertional are insane.

But she did fly directly into an airliner and kill 147 people.


I apologize if I misunderstood. There is so much poor conjecture and uniformed opinions that they start to rin together.

Again, how do you know which pilot was on the controls?


Multiple other sites are indicating the same:

https://www.army.mil/article/282772/army_identifies_third_soldier_involved_in_helicopter_crash

https://www.zerohedge.com/military/us-army-identifies-female-black-hawk-pilot-dc-jet-crash




Indicating what exactly? That there was a female pilot on board?
bobbranco
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GAC06 said:

Quote:

UH60 had the right of way?


Did I say that?

You are not stating anything coherent.
GAC06
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Yeah I'm the one being incoherent here for sure.
ArmyAg2002
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Catag94 said:

Question:
Would it be a common practice for the BH crew to use radar altitude and in so doing, stay over the river to prevent terrain fluctuations?


I should have said this in the earlier post. The altitude you fly for ATC is based on the barometric altimeter. You might cross-check the radar altimeter, but even over the river, it would fluctuate for anything in the river. As I recall, there are islands in the Potomac, bridges, and boats will change the indication as you fly over too.
aggiehawg
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Quote:

There have been reported near misses in the past. I wonder if standard procedure was to stop Route 4 traffic temporarily when aircraft are on approach and somehow the procedure was relaxed.
Depends on the runway, is my understanding. No potential for conflict when commercial traffic is lining up for Runway 1. When the switch is made to Runway 33, there is a potential for conflict with that Route 4.

If I am incorrect on that, please correct me.
Hey Nav
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So here is my offering on the chain of events after viewing a lot of the available news reports and interviews and presentations with aviators, both fixed wing and helicopter:

(btw, I have never been a licensed pilot, I have thousands of hours as an Airlift and Special Ops Navigator, and a lot of time flying with crews using NVGs, although 30 to 40 years ago).

My eagle eye view (using google maps) is that it's about 2.5 nm from the Key Bridge (permission required to cross, by Tower) and hearing that the Blackhawk would be traveling at about 120 kts, so that's about 1+23 minutes, give or take, before they would intersect the rwy 33 approach course. I was surprised to hear they were moving that fast. I would have guessed maybe 70 to 90 knots, but I have only been a passenger on helicopters.

The tower's release of the Blackhawk to proceed didn't really account for the arrival of flt 5342.

The Tower controller needed to hear the "in sight" response from the Blackhawk. Fine. It's all good. PAT 25 never had the correct aircraft in sight.

5342 didn't hear the conversation between Tower and PAT 25.

Thank you to coconutEd and tk for tu juan (see page 27 of this thread) for this:

IDEK is 1.61 miles to the threshold of RWY 33.

I would just imagine that the pilots of 5342 were just happy as can be to fly a visual approach, considering their normal day as airline pilots. I am not familiar at all with the modern days of RNAV and GPS, but I think that approach from Rwy 01 to 33 becoming a visual approach meant they had the navigational data to known when to start their turn and at were 490' or higher.

From my ancient days, I do remember the 300' per NM descent rate. (I did design and navigate many an airborne radar approach using a ground mapping radar, the curtain pulled to keep a dark cockpit, all the Pilots and Flight Engineer and Map Nav on their NVGs, landing on blacked out dirt or paved runways.)

So if the CRJ was descending at 300'/nm or more accurately 320'/nm using the VASIs, it seems they would be at approximately 233' MSL when crossing the river. Pilots, please correct me if I'm wrong or if they would be aiming further down the runway, but I'm guessing they are aiming to put it down as soon as practical.

PAT 25 could very well have been pretty dang close to 200' agl.

The Tower did not stop the helicopter and airplane from intersecting. The helo had no way of spotting 5342 way off to their left, (especially while on NVGs). How fast was 5342? Maybe 140 kias? PAT 25 - 120 kias? And they could have been within 50' in altitude.

So my theory is 5342 banked left a split second after seeing movement to their right. A blink of an eye.

VAT 25 also saw nothing to their left, and in an instant it got blindingly bright and their brain(s) pulled the collective , but all that happened in an instant.

I've seen this happen in flight - a copilot is flying on a peaceful day in the Bering Strait and glances off to his right, sees a MIG on our wingtip, and violently banks to the left, purely on instinct.

I've been out there over the water at night at maybe 2000' , in a right hand orbit, and swoosh. The pilot flying never even had an instant to react. We were lights out. A very large aircraft went through our windscreen from right to left, also lights out. Someone forgot to deconflict us. It was over before you could think. (Except going through their wash and rolling maybe 70 degrees to the right.

Thanks for reading. Hope it didn't bore you too much.
aTmAg
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GAC06 said:

Quote:

UH60 had the right of way?
Did I say that?
What are you guys even arguing about? Does it matter what part of the helicopter hit what part of the aircraft?
chickencoupe16
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aTmAg said:

GAC06 said:

Quote:

UH60 had the right of way?
Did I say that?
What are you guys even arguing about? Does it matter what part of the helicopter hit what part of the aircraft?


GAC06 is right but the point is so far lost now that it all just seems stupid.
annie88
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I don't care what they have or haven't done in the past helicopters do not need to be flying that closely to planes taking off and landing at airports. Period.
ArmyAg2002
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Hey Nav said:



My eagle eye view (using google maps) is that it's about 2.5 nm from the Key Bridge (permission required to cross, by Tower) and hearing that the Blackhawk would be traveling at about 120 kts, so that's about 1+23 minutes, give or take, before they would intersect the rwy 33 approach course. I was surprised to hear they were moving that fast. I would have guessed maybe 70 to 90 knots, but I have only been a passenger on



Blackhawks typically cruise at 120 KIAS.
aTmAg
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annie88 said:

I don't care what they have or haven't done in the past helicopters do not need to be flying that closely to planes taking off and landing at airports. Period.
Helicopters have been taking off and landing at the same airports with other aircraft forever. You want to ban that?
bobbranco
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chickencoupe16 said:

aTmAg said:

GAC06 said:

Quote:

UH60 had the right of way?
Did I say that?
What are you guys even arguing about? Does it matter what part of the helicopter hit what part of the aircraft?


GAC06 is right but the point is so far lost now that it all just seems stupid.

How so?

Quote:


GAC06 said:
That's not how the video looks to me
It is the realtiy of the wreckage. If the helo had been struck by the airliner, it would have been in multiple pieces. Instead, the helo struck the plane and sliced it into a couple of sections.

Then GAC says:

Quote:

Yeah that's not how it works. They collided and it looks to me like the main rotor of the helo took the brunt of the impact


It makes no sense. The UH flew into the starboard side of the CRJ. The main rotor taking the brunt of the impact has no bearing on the breakup the CRJ and is probably not physically possible given the dimension of the CRJ. It's a laughable statement.

Impact of the main body of the UH on the wing of the CRJ was the major destructive event not the main rotor supposedly taking the brunt of the impact. Again for repetition sake the rotor, see below, does not extend beyond the nose of the UH a great distance.

The aircraft that took the brunt of the impact was the CRJ from the UH main body striking the starboard side of the CRJ. UH was struck broadside the CRJ wing separated and clearly falls from the CRJ.

Notable facts:
CRJ winspan ~76' & half of wingspan ~38'
UH rotor overhang ~13'


aTmAg
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Why does any of this matter?
boulderaggie
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I'm still astonished at the astronomically horrible odds that these two aircraft traveling at the speeds they do, at dynamic altitudes, could occupy the same exact airspace at the same exact moment. Truly tragic.
Bunk Moreland
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Brother, you're arguing a made up topic against nobody. My advice would be to let it go. We don't understand what point you're trying to even come close to making.
aTmAg
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boulderaggie said:

I'm still astonished at the astronomically horrible odds that these two aircraft traveling at the speeds they do, at dynamic altitudes, could occupy the same exact airspace at the same exact moment. Truly tragic.
There are 45,000 flights per day. And they all converge at airports. Geometrically it's pretty easy to imagine. We've been good at de-confliction to make colisions a rare event.
bobbranco
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aggiehawg said:

Quote:

There have been reported near misses in the past. I wonder if standard procedure was to stop Route 4 traffic temporarily when aircraft are on approach and somehow the procedure was relaxed.
Depends on the runway, is my understanding. No potential for conflict when commercial traffic is lining up for Runway 1. When the switch is made to Runway 33, there is a potential for conflict with that Route 4.

If I am incorrect on that, please correct me.
That's correct because Route 4 only interferes with Runway 33. There is also a Route 6 that is east-west over the airport. I am unable to extract the image but interesting maps on the NYT website.

https://www.nytimes.com/interactive/2025/02/01/us/dca-air-traffic-plane-crash.html
GAC06
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You're lost. Both aircraft were moving, the CRJ faster than the 60. From the video, the 60 tumbled forward after impact, suggesting that the rotor was what made contact, not the fuselage for the most part. The CRJ may have broken up before impact with the water but that's not evident from the video.

To me it appears the 60 got just in front of the CRJ's right wing and slightly below, the collision sent the 60 forward without its rotor and the CRJ into the river as well following its momentum.

Go find some more diagrams and MTOW numbers from google though.
GAC06
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aTmAg said:

Why does any of this matter?


It doesn't.
bobbranco
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Bunk Moreland said:

Brother, you're arguing a made up topic against nobody. My advice would be to let it go. We don't understand what point you're trying to even come close to making.
Brunt of impact on the rotor is a completely laughable statement. The statement in the context it was presented implies that such impact was the most important aspect of the crash. Ridiculous statement on so many levels.
chickencoupe16
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I will not be contributing to your nonsense.
GAC06
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The fuselage of the 60 continued forward after impact. I guess I should stop arguing with such an aviation and mishap expert though.
bobbranco
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GAC06 said:

aTmAg said:

Why does any of this matter?


It doesn't.
If the rotor struck the aircraft first that means absolutely nothing. The massive impact force on the CRJ was the mass from UH. As a result the wing sheared from the fuselage. And that is why the UH rolled forward. Simple physics.
GAC06
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You're just making **** up
 
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