Ual 4933
#251
https://www.flightradar24.com/blog/wp-content/uploads/2022/07/NTSB_FINAL_Presque_Isle.pdf
https://data.ntsb.gov/Docket?ProjectID=99050
https://data.ntsb.gov/Docket/Document/docBLOB?ID=13700231&FileExtension=pdf&FileName=DCA 19FA089%20Operational%20Factors%20%20Factual%20Rep ort-Rel.pdf
https://data.ntsb.gov/Docket/Document/docBLOB?ID=13692224&FileExtension=pdf&FileName=HP% 20PQI%20Factual%20Final_Post%20Tech%20Review-Rel.pdf
https://data.ntsb.gov/Docket?ProjectID=99050
https://data.ntsb.gov/Docket/Document/docBLOB?ID=13700231&FileExtension=pdf&FileName=DCA 19FA089%20Operational%20Factors%20%20Factual%20Rep ort-Rel.pdf
https://data.ntsb.gov/Docket/Document/docBLOB?ID=13692224&FileExtension=pdf&FileName=HP% 20PQI%20Factual%20Final_Post%20Tech%20Review-Rel.pdf
#257
Line Holder
Joined: Jul 2017
Posts: 1,530
Likes: 24
Executive summary....
Snow accumlated around the LOC antenna, casusing the LOC beam to be off center by 200'
Several crew (including the accident FO on a previous flight) experienced this in the preceeding five days but did not report it.
The arrival prior to the accident reported it, but FAA policy was that action would only be taken (such as placing the LOC OOS) if two or more aircraft reported problems (in case the first aircraft had bad avionics). Policy did say to switch to standby equipment, but there was no local tower to do that.
Crew kept descending below minimums with runway environment not identified, until impact.
FAA did change policy to require snow clearance around LOC antennas (previously only required around GS antennas).
Snow accumlated around the LOC antenna, casusing the LOC beam to be off center by 200'
Several crew (including the accident FO on a previous flight) experienced this in the preceeding five days but did not report it.
The arrival prior to the accident reported it, but FAA policy was that action would only be taken (such as placing the LOC OOS) if two or more aircraft reported problems (in case the first aircraft had bad avionics). Policy did say to switch to standby equipment, but there was no local tower to do that.
Crew kept descending below minimums with runway environment not identified, until impact.
FAA did change policy to require snow clearance around LOC antennas (previously only required around GS antennas).
A lot of the errors are from reasonable assumptions:
Many of us know that snow piles affect ILS signals. A good number know this affects localizer as well as glideslope signals. So it's understandable (not acceptable) that this wasn't reported by other crews. Many years ago I was based in Presque Isle. The town was a shell of its former self, and it hasn't grown since then. So is a small town airport going to deviate from procedures that have been working for Colgan, Commutair, Wiggins, AirNow, etc. for years? A brand, spaking new FO expects a captain to have some judgement and experience. The captain directs the FO to stay inside on the second approach, and the FO does. This also is understandable, but not acceptable. That captain expects the localizer to work as expected, gets needles and identification. She never considers that the signal may be off. This is also understandable.
I'm always making noise about something. Conflicts of interest, training curricula, GPS spoofing, etc. I'm fully aware of the political costs of speaking out. Others use that awareness to navigate promotion pathways (I've done so in the past. No judgement.). So there's real-world pressure on these crews to shut up and keep up. There was real-world pressure for commutair to get this particular captain through. A probationary FO feels real world pressure not to upset whoever's in the left seat.
The swiss cheese aligned in some pretty relatable ways here. Many of our own operations can and have experienced similar things. Not being a Commutair guy I can't speak to what goes on or went on there. I would wonder what pressures crews felt not to report things.
Last edited by Elevation; 08-19-2024 at 02:22 AM.
#258
Prime Minister/Moderator

Joined: Jan 2006
Posts: 44,931
Likes: 699
From: Engines Turn or People Swim
I'm always making noise about something. Conflicts of interest, training curricula, GPS spoofing, etc. I'm fully aware of the political costs of speaking out. Others use that awareness to navigate promotion pathways (I've done so in the past. No judgement.). So there's real-world pressure on these crews to shut up and keep up. There was real-world pressure for commutair to get this particular captain through. A probationary FO feels real world pressure not to upset whoever's in the left seat.
Emailing CP's is usually a waste of time, unless it's an actual CP issue like no coffee cups for the machine in the crew lounge when you show for a redeye. CP's are generally too busy with crew drama.
If you're "that guy" on the company forums, always complaining to CP and union, then they'll tend to tune you out eventually, even when you have something worth saying.
#259
Line Holder
Joined: Jul 2017
Posts: 1,530
Likes: 24
I routinely send emails to fleet captain office, training manager etc. pointing out technical issues I observe online. They've gotten used to me and will fix things.
Emailing CP's is usually a waste of time, unless it's an actual CP issue like no coffee cups for the machine in the crew lounge when you show for a redeye. CP's are generally too busy with crew drama.
If you're "that guy" on the company forums, always complaining to CP and union, then they'll tend to tune you out eventually, even when you have something worth saying.
Emailing CP's is usually a waste of time, unless it's an actual CP issue like no coffee cups for the machine in the crew lounge when you show for a redeye. CP's are generally too busy with crew drama.
If you're "that guy" on the company forums, always complaining to CP and union, then they'll tend to tune you out eventually, even when you have something worth saying.
In the context of this event you have to wonder if these pilots thought their voices wouldn't be heard, would get them smacked, etc. There's a lot that people knew and didn't talk about. Seems there was a lot where people didn't want to offend a captain, etc.
#260
Disinterested Third Party
Joined: Jun 2012
Posts: 6,758
Likes: 74
Will NTSB EVER release the report?
The event was not a career-ender. It involved multiple external factors, including multiple reports of localizer mis-alignment, as well as pilot fatigue, more than one approach, and a descent to the surface without the runway environment in sight (despite the captain call of "lights," when clearly not aligned with the runway).
Despite multiple conspiracy insinuations here (read the linked thread), it was nothing of the sort, and was pretty much what it appeared to be. Nothing new.
The event was not a career-ender. It involved multiple external factors, including multiple reports of localizer mis-alignment, as well as pilot fatigue, more than one approach, and a descent to the surface without the runway environment in sight (despite the captain call of "lights," when clearly not aligned with the runway).
Despite multiple conspiracy insinuations here (read the linked thread), it was nothing of the sort, and was pretty much what it appeared to be. Nothing new.
Thread
Thread Starter
Forum
Replies
Last Post
EngineOut
Regional
153
05-10-2017 10:12 AM



