Questions tagged [cockpit-alerts]
The lights, displays, sounds, shakers, etc. that attract the flight crew's attention to various situations.
38
questions
2
votes
1
answer
174
views
"Left overspeed" on MD-11
The MD-11 has an overspeed and a left overspeed call-out alarms. This is different from the modern planes counterparts, in which a tick-tick-tick sound is used instead.
What does left overspeed even ...
- 123
4
votes
2
answers
205
views
Does Flight Recorders store TAWS-Terrain Warning Alerts when its inhibited?
EGPWS(Enhanced Ground Proximity Warning Systems) or TAWS (Terrain Avoidance and Warning System) systems create terrain and obstacle alerts both visual and aural.
But in some configurations they can be ...
- 53
0
votes
0
answers
52
views
Why would the salience of the A330/A340's stall warning be decreased, rather than increased, by being an aural alert on a primarily-visual airplane?
Going back and reading through the AF447 accident report:
Furthermore, in alternate or direct laws as featured in the manufacturer’s manual (FCOM), the stall warning is described as being the ...
- 28.1k
2
votes
1
answer
65
views
Does the battery discharge detector have a self test function on the B738?
Does the battery discharge detector on a Boeing 737-800 have a self test function that causes the light (BAT DISCHARGE) to illuminate and extinguish?
I have not found such a thing in the FCOM but been ...
- 81
11
votes
2
answers
1k
views
From a safety standpoint, which is better: voice aural alerts or tone aural alerts?
Most modern airplanes have some sort of crew alerting system. These alerts are generally conveyed through display messages, lights, and aural alerts. Aural alerts can either be tones or voices. For ...
- 1,657
7
votes
3
answers
732
views
What are the Boeing 777 aural alerts indicating in this ATC recording?
There was a recent incident (avherald.com) with an Air France Boeing 777 on approach to CDG where several different aural warnings can be heard in the ATC audio recording (YouTube) when the pilot has ...
- 19.4k
10
votes
1
answer
786
views
Why do Audio Engine Fail Alarms not state which engine has failed?
When an engine fails on e.g. a 737, an alarm sounds to indicate an engine fire (but not failure). Why however, is there no verbal alarm stating which engine has failed, in the same way that "...
- 1,185
8
votes
2
answers
4k
views
Why doesn't the 737 MAX have an APU EGT gauge like all other 737s do?
On Original, Classic, and Next Generation 737s, the APU panel has an EGT (exhaust-gas temperature) gauge below the four APU caution/warning lights (all images in this question are from the 737 ...
- 28.1k
3
votes
1
answer
1k
views
What does the sound and flashing button indicate during this landing?
What does the sound in this YouTube video indicate? It is accompanied by a flashing button.
Does that sound indicate the touchdown of both the main and nose landing gear? The pilot also pressed the ...
- 1,567
1
vote
1
answer
399
views
Aircraft engine communication with satellite
Do pilots get an audible indication when the engines are communicating with the manufacturer whilst in flight. Do these "pings" or "hanshakes" begin on start up and are they always ...
- 59
5
votes
1
answer
759
views
Why do some GPS receivers suppress RAIM integrity warnings after you pass the FAF?
RAIM performs an integrity check 2NM from the FAF. If RAIM is lost before the FAF, one should execute the missed approach.
However, if RAIM is lost after passing the FAF, some GPS receivers will ...
- 51
6
votes
2
answers
2k
views
What’s the difference between an AIRSPEED LOW warning and a STALL warning?
Just an enthusiast here; pardon the dumb question. Im a little confused between the difference of a stall and airspeed low.
“An aircraft Stall Warning System is that system which provides the pilot ...
- 821
3
votes
1
answer
245
views
Since when did European regulations require the ability to suppress alerts?
Thanks to @Gerry's comment on a recent answer of mine, the 2011 ruling on the FAA's amended 14 CFR § 25.1322 mentions:
Adopting this rule also harmonizes flightcrew alerting standards between the FAA ...
user14897
13
votes
3
answers
7k
views
Why are cockpit alarms still so distracting and unable to be silenced?
I'm watching video RV 10 N783V My 1st Emergency
At 8:45 a stall alarm goes off and is a horrible piercing whistle. Why? Surely the pilot has enough distractions without also being deafened while ...
- 1,925
2
votes
2
answers
570
views
Is there a cockpit indication if the B737 flap load relief is not working properly?
On a 737, does the pilot get any cockpit indication that his Flap Load Relief is not working properly? Say for instance due to a Flap Lever Position Switch failure?
5
votes
1
answer
4k
views
What's the difference between the "100 above" and "100" GPWS above callout?
Not all aircraft have both; this one does and can be heard at 1:12:
- 53
5
votes
1
answer
668
views
Why does the 737 Original have an explicit hydraulic-quantity indicator for only the A hydraulic system?
The 737 (Original, Classic, NG, and MAX) has two primary hydraulic systems (A and B),1 which provide power to the aircraft’s flight controls and other aircraft components (like the wheelbrakes, ...
- 28.1k
1
vote
1
answer
467
views
Does ELMS inhibit cabin pressure alarms on the 777, and would the MEC Override Vent be stuck open following an electrical failure?
I found this article rather interesting, but like most things on the internet, they can be wrong. I couldn't think of a better site to address this question. This user says:
when ELMS takes over ...
2
votes
1
answer
199
views
Why don't airliners use light strips on physical controls (yoke/stick, throttle and trim) to indicate who has control - pilot or flight computer?
I've watched a lot of Air Disasters episodes about crashes where pilots thought auto-pilot, auto-throttle, auto-trim were "in control" but they weren't (or vice-versa) due to some innocuous ...
- 121
4
votes
1
answer
419
views
Can the Master Caution illuminate without the System Annunciator Panel on the 737NG?
Does the master caution light illuminate only with the System Annunciator Panel?
Or is the master caution illumination also connected to the related system panels?
I mean if there is an indication on ...
- 43
7
votes
2
answers
305
views
Are warnings generally "source-focused" or "effect-focused"?
I have trouble wording this question, please bear with me.
Sullenberger recently stated that the pilots of the fatal MAX flights where likely under sensory overload caused by "multiple, ...
- 425
2
votes
2
answers
3k
views
Why do I get an overspeed warning at 250kts below 10,000ft in Microsoft Flight Simulator?
I'm flying the Cessna CJ4. I get overspeed warnings at 250kts when below 10,000ft, and the speed indicator has red lines at 300kts. Are these warnings triggered because it'll damage the plane to go ...
- 121
4
votes
1
answer
1k
views
Can 737NG GPWS and other warning voice lines/sounds be played in headphones instead of cockpit speaker?
I watched a couple of cockpit videos on the 737NG landing, and I noticed GPWS in some of the videos does not announce 500ft, 400ft, 300ft, etc. Does this mean the pilots have routed these sounds into ...
- 1,258
6
votes
1
answer
412
views
Why does enabling engine sync on the MD-80 series trigger the "Master Caution" light?
I fly in a consumer PC flight simulator. Among my virtual fleet is a fairly faithfully-reproduced MD-83.
One fairly strange detail I noticed is that enabling engine sync (either on N1 or N2) in the ...
- 458
3
votes
1
answer
609
views
What is the correct procedure for operating the engine fire extinguishers on an ATR72?
I am developing an application for airport fire crew and ground staff. Part of the application is to familiarize users with emergency procedures of various aircraft. I have a few questions about the ...
- 153
2
votes
1
answer
605
views
Why does the APU Master Switch flash during a normal APU shutdown?
Hi all and Happy New Year!!!
I have a question relating to APU shutdown procedures on Airbus A320. During normal APU shutdown sequences, I noticed that after around 1m20s, the FAULT legend on APU ...
- 745
22
votes
2
answers
5k
views
How do pilots know that the switch/knob they just switched on/off actually did what it's supposed to do?
With the plethora of switches/knobs/buttons etc present in airplane cockpits, how can pilots be really sure that a button they just pushed (either to enable/disable some electronic system or move some ...
- 621
4
votes
0
answers
195
views
What flight conditions trigger the "altitude, altitude" callout on an A-10?
I saw this video that shows an A-10 mission in Afghanistan. At 4:31 and 6:08 the callout "Altitude, altitude" is audible.
I would like to know which flight conditions are required to trigger the ...
- 141
3
votes
1
answer
157
views
Why will windshear inop illuminate after landing in an MD-83?
Why will windshear inop illuminate on the annunciator panel after landing or before starting taxi in a McDonnell Douglas MD-83?
- 31
7
votes
3
answers
4k
views
Why does the low voltage warning light not illuminate when the alt switch is on, but the engine is off?
As part of the pre-flight inspection, one of the checks is to verify that the low voltage light is illuminated when switching just the battery on. This makes sense; there's a low voltage and the ...
- 127
30
votes
2
answers
5k
views
What is the purpose of the Dash 8’s “TOUCHED RUNWAY” warning light?
The DHC-8-400 (and possibly other DHC-8 variants) has (or, at least, had in late 2007, according to Appendix G of this AAR) a warning light labelled “TOUCHED RUNWAY”.
The extract of the DHC-8-400’s ...
- 28.1k
4
votes
3
answers
2k
views
Does the Boeing 737 NG have "5" radar altitude callout?
I was watching a video of a Boeing 737 NG land, and heard the "5" callout.
Is that an airline option or something?
- 1,258
5
votes
1
answer
2k
views
What are the triggers of the MD-80's takeoff configuration warnings?
I'm helping develop sounds for a MD80 simulation and I've noticed the MD has up to 5 alarms that fire when you advance the throttle and the aircraft is not properly prepared for takeoff:
"Beep beep ...
- 317
1
vote
0
answers
101
views
Is there a GPWS volume control in the audio control panel for the B737? [duplicate]
So, I was sitting in the front rows of an A320 and could obviously hear the AP disconnect. But I could not hear the GPWS altitude and RETARD callouts. I assume this is because the pilots set the GPWS ...
- 1,258
10
votes
1
answer
2k
views
What did the "gear warning horn" on the North American P-51 sound like?
I'm working on a sound project for a P51 simulation and I'm having real trouble trying to find a reference on how the P51 gear warning horn sounded like. What mechanisms were used in the '40s to make ...
- 317
13
votes
1
answer
2k
views
Why are there non-standard altitude callouts?
I just saw a YouTube video with an A340 landing. There were the regular altitude callouts (1000, 500, etc.) until the callout "110". I was quite puzzled by this.
What are the conditions that the ...
user12873
4
votes
2
answers
2k
views
Why does Airbus suppress stall warnings in certain situations?
I was reading about Air France 447 and came across the line:
The stall warnings stopped, as all airspeed indications were now considered invalid by the aircraft's computer due to the high angle of ...
- 2,418
12
votes
4
answers
5k
views
What is a 'Wing Loop Fault' on an A320 series Aircraft?
I was recently involved in a flight that had issues before take off. The plane was an Airbus 321.
It was explained to me as being a "wing loop fault". The problem was that the ECAM messages were ...
- 265