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-   -   So what made the beeping noise? (https://www.airlinepilotforums.com/united/152805-so-what-made-beeping-noise.html)

Jim Rockford 04-19-2026 02:59 PM

So what made the beeping noise?
 
I’ve looked all over and I didn’t find what made the beeping noise for the United diversion. Anyone know? (Just curious!)

AAdvocate 04-19-2026 03:08 PM


Originally Posted by Jim Rockford (Post 4025282)
I’ve looked all over and I didn’t find what made the beeping noise for the United diversion. Anyone know? (Just curious!)

People believe everything they see in the movies. Who the heck would make a bomb that beeps?

F15andMD11 04-19-2026 04:40 PM


Originally Posted by AAdvocate (Post 4025286)
…Who the heck would make a bomb that beeps?

Right! OMG! Talk about an abundance of caution, all the way up to an evacuation!😳 Someone packed their alarm clock!

MaxThrust1 04-19-2026 05:07 PM

Defibrillator (AED) low battery can make that beeping.

Totally speculative though. Not Monday morning QBing the decision!

Vernon Demerest 04-19-2026 06:54 PM

In the history of modern aviation we have never found a bomb on an airliner after “bomb on board” has been written on a lavatory mirror yet we still have 364 seat 777s divert anyway to/from Hawaii because the cabin crew is scared.

nene 04-19-2026 06:58 PM


Originally Posted by MaxThrust1 (Post 4025320)
Defibrillator (AED) low battery can make that beeping.

Totally speculative though. Not Monday morning QBing the decision!

ABC news said they inspected the whole plane and found nothing. Go figure.

John Carr 04-19-2026 08:32 PM

https://youtu.be/cLrhh6zA1Ms?si=96KSumuCpaOy203F

kangs 04-19-2026 09:30 PM

Evacuation on the runway? Oh boy….

Turbosina 04-19-2026 10:11 PM


Originally Posted by kangs (Post 4025395)
Evacuation on the runway? Oh boy….

Agreed. Not a good look. But let's wait for the full report...FAs might have reported a fire, or really anything could have contributed to the evac decision...

HwkrPlt 04-19-2026 10:58 PM


Originally Posted by Vernon Demerest (Post 4025346)
In the history of modern aviation we have never found a bomb on an airliner after “bomb on board” has been written on a lavatory mirror yet we still have 364 seat 777s divert anyway to/from Hawaii because the cabin crew is scared.

If they only had 363 seats it would have been a different story

Uninteresting 04-20-2026 04:26 AM

unregard…..

Vernon Demerest 04-20-2026 05:47 AM

[QUOTE=HwkrPlt;4025402]If they only had 363 seats it would have been a different story[/QUOTE

Ha. I’m more thinking of all the hotel rooms in the Hawaiian city the flight returns to that have to be secured at great cost due to these bogus, most likely college kid pranks. People miss weddings/funerals/life events because of these pranks. We have employees who actually need profit sharing checks to make their lives work. This is stealing from them if you ask me.

JamesNoBrakes 04-20-2026 06:30 AM

Everyone knows that bombs have digital or analog count-down timers, so that would be easy to find.

https://i.makeagif.com/media/6-15-2022/0XJSTW.gif

cactipilot 04-20-2026 07:46 AM

Even more interesting to me is what must the poor captive audience, aka passengers, must have been watching, hearing and thinking this whole time....

sl0wr0ll3r 04-20-2026 08:09 AM


Originally Posted by Vernon Demerest (Post 4025346)
In the history of modern aviation we have never found a bomb on an airliner after “bomb on board” has been written on a lavatory mirror yet we still have 364 seat 777s divert anyway to/from Hawaii because the cabin crew is scared.

I won’t speak to the evacuation decision, but your comment regarding having never found a bomb on board in the past as a reason to disregard a current threat is more than concerning. A 9/11-type attack had never taken place before 9/11.

kangs 04-20-2026 08:15 AM


Originally Posted by sl0wr0ll3r (Post 4025490)
I won’t speak to the evacuation decision, but your comment regarding having never found a bomb on board in the past as a reason to disregard a current threat is more than concerning. A 9/11-type attack had never taken place before 9/11.

You’re not disregarding the threat by continuing the flight. These people have a specific kind of behavior and without mentioning specifics on a public forum, that is not it. This was mentioned in the last CQDL exactly for this reason - so we don’t get people hurt over the Hollywood-style stunts

HwkrPlt 04-20-2026 08:16 AM

I mean, we're really criticizing people for taking the most conservative route? If you have a f/a that is convinced there is an issue, you just gonna blow them off and keep going? And regarding the evac, might have been pax initiated. We don't have all the data.

JoePatroni 04-20-2026 08:43 AM


Originally Posted by HwkrPlt (Post 4025495)
I mean, we're really criticizing people for taking the most conservative route? If you have a f/a that is convinced there is an issue, you just gonna blow them off and keep going? And regarding the evac, might have been pax initiated. We don't have all the data.

They are “convinced” there is a bomb on board because they hear a beeping noise?

dmeg13021 04-20-2026 09:07 AM


Originally Posted by JoePatroni (Post 4025505)
They are “convinced” there is a bomb on board because they hear a beeping noise?

I'll take a new captain diverting because of a security concern over an old captain stowing the spoilers and brakes in the first 5 seconds and proceeding to slide off SC. Go expense your missed meal.

rickair7777 04-20-2026 09:21 AM


Originally Posted by HwkrPlt (Post 4025495)
I mean, we're really criticizing people for taking the most conservative route? If you have a f/a that is convinced there is an issue, you just gonna blow them off and keep going? And regarding the evac, might have been pax initiated. We don't have all the data.

As someone with a tech (and demolition) background, I'd assume a beeping noise was consumer electronics run amuck. As has been pointed out, non-hollywood tactical bombs (even amateur ones) don't provide advance warnings to the intended target.

But I really wouldn't except that much technical insight from FA's, to say nothing of pax :rolleyes:

JoePatroni 04-20-2026 10:56 AM


Originally Posted by dmeg13021 (Post 4025512)
I'll take a new captain diverting because of a security concern over an old captain stowing the spoilers and brakes in the first 5 seconds and proceeding to slide off SC. Go expense your missed meal.

Ok….so now a beeping noise is a “security concern?”

rickair7777 04-20-2026 11:24 AM


Originally Posted by JoePatroni (Post 4025558)
Ok….so now a beeping noise is a “security concern?”

When the FA's report a "possible bomb" onboard, is your immediate priority to going be a detailed analysis of their assessment? Or get the divert, checklists, and notifications going?

I guess if you're two hours out from Midway Island, you could do the former.

Ultimately, it's on the FA's if they Cry Wolf without reasonable (from their perspective) cause.

AAdvocate 04-20-2026 11:59 AM


Originally Posted by rickair7777 (Post 4025570)
When the FA's report a "possible bomb" onboard, is your immediate priority to going be a detailed analysis of their assessment? Or get the divert, checklists, and notifications going?

I guess if you're two hours out from Midway Island, you could do the former.

Ultimately, it's on the FA's if they Cry Wolf without reasonable (from their perspective) cause.

Yes, if a FA tells me that there is a possible bomb on board I am 100% going to ask probing questions as to why she/he thinks that.

OFFCOURSE 04-20-2026 12:09 PM


Originally Posted by HwkrPlt (Post 4025495)
I mean, we're really criticizing people for taking the most conservative route? If you have a f/a that is convinced there is an issue, you just gonna blow them off and keep going? And regarding the evac, might have been pax initiated. We don't have all the data.

Can’t Monday morning QB this situation, but you have to take anything an fa says with a grain of salt and do your own due diligence. You can’t solely go off anything they say , whether it’s an issue with a pax or equipment issue or whatever. Most of them have proven themselves not to be the sharpest knife in the drawer.

OFFCOURSE 04-20-2026 12:12 PM


Originally Posted by AAdvocate (Post 4025580)
Yes, if a FA tells me that there is a possible bomb on board I am 100% going to ask probing questions as to why she/he thinks that.


The alarm on her fake imitation Apple Watch went off and she dosent know what it is 😂so it must be a bomb chirping .

11atsomto 04-20-2026 03:20 PM


Originally Posted by Vernon Demerest (Post 4025346)
In the history of modern aviation we have never found a bomb on an airliner after “bomb on board” has been written on a lavatory mirror yet we still have 364 seat 777s divert anyway to/from Hawaii because the cabin crew is scared.

With such key details Im sure this happened..apologies for being unfamiliar....but could you cite when the last time this happened.....and what with the 364/363 seats reference for those who don't know.

HwkrPlt 04-21-2026 05:45 AM

So when you’re sitting at the other side of the big brown desk, and you’re being asked why you didn’t divert after a flight attendant reported that there was possibly a bomb on board, how will you respond?

rightside02 04-21-2026 06:09 AM

I can understand the reason for divert but to land and deploy the slides so fast that you didn’t even put the reversers back in ?

The egress is more questionable without have all the facts . I hope the investigation will actually explain to us what happened and how/why decisions were made.

HuskerAv8tor 04-21-2026 06:13 AM


Originally Posted by HwkrPlt (Post 4025824)
So when you’re sitting at the other side of the big brown desk, and you’re being asked why you didn’t divert after a flight attendant reported that there was possibly a bomb on board, how will you respond?

Well the fact that I am here on the other side of your big brown desk proves there was no bomb!

SeamusTheHound 04-21-2026 06:57 AM


Originally Posted by AAdvocate (Post 4025580)
Yes, if a FA tells me that there is a possible bomb on board I am 100% going to ask probing questions as to why she/he thinks that.

Exactly - It’s perfectly ok to direct the flight attendant to hack their watch and spend five measured minutes looking for the source of the beep. That gives Capt/FO five minutes to consider their own next steps.

You’re not telling the FAs that you are refusing to divert - you’re simply setting a calm, objective threshold for doing so. I’d defend that course of action all day long at the big long table.

AAdvocate 04-21-2026 06:58 AM


Originally Posted by HwkrPlt (Post 4025824)
So when you’re sitting at the other side of the big brown desk, and you’re being asked why you didn’t divert after a flight attendant reported that there was possibly a bomb on board, how will you respond?

Now you have to explain why you deployed the slides which is VERY high risk and almost guaranteed to have a broken ankle or two on a plane full of passengers. I don't see anybody questioning the decision to divert.

HwkrPlt 04-21-2026 07:24 AM


Originally Posted by AAdvocate (Post 4025848)
Now you have to explain why you deployed the slides which is VERY high risk and almost guaranteed to have a broken ankle or two on a plane full of passengers. I don't see anybody questioning the decision to divert.

So pilots deploy the slides? Wow, what a weird airline. Guess I'm glad I don't work there.

Ebola 04-21-2026 09:12 AM


Originally Posted by HwkrPlt (Post 4025824)
So when you’re sitting at the other side of the big brown desk, and you’re being asked why you didn’t divert after a flight attendant reported that there was possibly a bomb on board, how will you respond?

It’s your job to assess the situation using your available resources. A beeping noise is not ‘a possible bomb on board’. It’s a beeping noise. Guess what beeps on board an aircraft ? Air Tags. They beep in lost mode, they beep when your apple device thinks you’re being tracked by one, when they’ve lost a connection and when the battery is going to fail. I’ve had my phone tell me I’m being followed by an AirTag - it was in the baggage compartment and I was in the cockpit, at FL410. Numerous other devices beep.

I’m not questioning the decision making of the crew. Maybe they fully assessed the situation; searched the aircraft and contacted operations, who then spoke to corporate security, who then advised them to evacuate if no other method for deplaning was immediately available.

AAdvocate 04-21-2026 09:29 AM


Originally Posted by HwkrPlt (Post 4025861)
So pilots deploy the slides? Wow, what a weird airline. Guess I'm glad I don't work there.

Are you saying the slides were deployed against the Captains orders? That is a new piece of detail I haven't heard. Do you have a source?

hoover 04-21-2026 12:20 PM

I thought the crew said over ATC that the "bomb" was put under the L2 door and that they might possibly evacuate after landing.
so the FAs found where the beeping was coming from.

HwkrPlt 04-21-2026 02:14 PM


Originally Posted by AAdvocate (Post 4025917)
Are you saying the slides were deployed against the Captains orders? That is a new piece of detail I haven't heard. Do you have a source?

You have a source that says the captain initiated the evac? It wasn't passenger or a flight attendant initiated? You have a source?

My point is no one on this thread was there, and no one got hurt. Stop second guessing the crew.

AAdvocate 04-22-2026 05:21 AM


Originally Posted by HwkrPlt (Post 4026028)
You have a source that says the captain initiated the evac? It wasn't passenger or a flight attendant initiated? You have a source?

My point is no one on this thread was there, and no one got hurt. Stop second guessing the crew.

In the airline world evacs are initiated from the cockpit in case you didn't know. You can ask during your next recurrent if you don't believe me. It is part of the checklists and everybody, including the flight attendants, are trained on it. Unless I hear otherwise that is what I am going to expect what happened. The only time in the past when a passenger or FA initiated an evacuation without orders from the cockpit there was always fire or smoke involved. As far as I know there were none in this case.

HwkrPlt 04-22-2026 06:25 AM


Originally Posted by AAdvocate (Post 4026190)
In the airline world evacs are initiated from the cockpit in case you didn't know. You can ask during your next recurrent if you don't believe me. It is part of the checklists and everybody, including the flight attendants, are trained on it. Unless I hear otherwise that is what I am going to expect what happened. The only time in the past when a passenger or FA initiated an evacuation without orders from the cockpit there was always fire or smoke involved. As far as I know there were none in this case.

In a perfect world it works that way, but this world isn't perfect.

But yes, you're right these were the worst pilots ever in the world and they should be fired. The best course of action when there is something sus going on in the cabin is to just keep trucking to your destination and ignore everything. Can't delay getting those New Balances on before you head to the Irish pub.


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