407
submitted 8 months ago* (last edited 8 months ago) by MicroWave@lemmy.world to c/news@lemmy.world

The cockpit voice recorder data on the Alaska Airlines Boeing 737 MAX 9 jet which lost a panel mid-flight on Friday was overwritten, U.S. authorities said, renewing attention on an industry call for longer in-flight recordings.

National Transportation Safety Board (NTSB) chair Jennifer Homendy said on Sunday no data was available on the cockpit voice recorder because it was not retrieved within two hours - when recording restarts, erasing previous data.

The U.S. requires cockpit voice recorders to log two hours of data versus 25 hours in Europe for planes made after 2021.

The International Civil Aviation Organization (ICAO) has since 2016 called for 25-hour recording on planes manufactured from 2021.

"There was a lot going on, on the flight deck and on the plane. It's a very chaotic event. The circuit breaker for the CVR (cockpit voice recorder) was not pulled. The maintenance team went out to get it, but it was right at about the two-hour mark," Homendy said.

The NTSB has been vocal in calling for the U.S. to extend its rule to 25 hours. The U.S. Federal Aviation Administration (FAA) a month ago said it was proposing to extend to 25 hours – but only for new aircraft.

you are viewing a single comment's thread
view the rest of the comments
[-] pc486@reddthat.com 3 points 8 months ago

Flight recorders have a very long history with modern ones being engineered in the 1960s. They used film and magnetic tape loops, having very limited capacity. That's where we get 2 hours from. Early ones only ran for 30 minutes, so 2 hours is pretty good in comparison.

It's time to upgrade the regulations to match our current technology instead of 1990s limitations.

[-] Dettweiler42@lemm.ee 3 points 8 months ago* (last edited 8 months ago)

Modern ones are solid state and the owner can choose how long they want to record for. Most ETOPS aircraft will record for much longer than 2 hours. I believe my airline records for 25 hours, even though our aircraft are not based in Europe.

[-] pc486@reddthat.com 2 points 8 months ago

Absolutely. My comment is about why a regulation would be 2 hours when today we can get more capable, air rated parts. US regulation is lagging behind, but it was based on what was within reach 20+ years ago. Heck, I bet most craft would eventually become 25 hours voice recording as older standard recorders become no longer available.

this post was submitted on 08 Jan 2024
407 points (99.3% liked)

News

22838 readers
4172 users here now

Welcome to the News community!

Rules:

1. Be civil


Attack the argument, not the person. No racism/sexism/bigotry. Good faith argumentation only. This includes accusing another user of being a bot or paid actor. Trolling is uncivil and is grounds for removal and/or a community ban.


2. All posts should contain a source (url) that is as reliable and unbiased as possible and must only contain one link.


Obvious right or left wing sources will be removed at the mods discretion. We have an actively updated blocklist, which you can see here: https://lemmy.world/post/2246130 if you feel like any website is missing, contact the mods. Supporting links can be added in comments or posted seperately but not to the post body.


3. No bots, spam or self-promotion.


Only approved bots, which follow the guidelines for bots set by the instance, are allowed.


4. Post titles should be the same as the article used as source.


Posts which titles don’t match the source won’t be removed, but the autoMod will notify you, and if your title misrepresents the original article, the post will be deleted. If the site changed their headline, the bot might still contact you, just ignore it, we won’t delete your post.


5. Only recent news is allowed.


Posts must be news from the most recent 30 days.


6. All posts must be news articles.


No opinion pieces, Listicles, editorials or celebrity gossip is allowed. All posts will be judged on a case-by-case basis.


7. No duplicate posts.


If a source you used was already posted by someone else, the autoMod will leave a message. Please remove your post if the autoMod is correct. If the post that matches your post is very old, we refer you to rule 5.


8. Misinformation is prohibited.


Misinformation / propaganda is strictly prohibited. Any comment or post containing or linking to misinformation will be removed. If you feel that your post has been removed in error, credible sources must be provided.


9. No link shorteners.


The auto mod will contact you if a link shortener is detected, please delete your post if they are right.


10. Don't copy entire article in your post body


For copyright reasons, you are not allowed to copy an entire article into your post body. This is an instance wide rule, that is strictly enforced in this community.

founded 1 year ago
MODERATORS