Electronic flight displays

[Bill Hart]

Okay Guys,
I need some help and know there are a lot of aviation smart guys here. Here is the scenario.
A crew comes back and says that on top of decent two of the three displays go blank. I don’t have any other information than that. Don’t know if they went black(lost power) of grey(loss of data) they did not red X.
On the ground maintenance can’t find anything wrong; all systems check were performed and checked out okay.
This is just hypothetical so I need the correct legal answer , I seem to remember that there is a requirement to report this kind of failure to the fed’s? Any help???

[Bruce Fenstermacher]

Well Bill, since the pilots didn't write it up (and the fault can't be found), you really don't have a fault to report, if required, do you.

[jrenwick]

Reporting requirements are in 14 CFR 830: http://bit.ly/HrqXGv. If it's a multiengine aircraft weighing over 12,500 pounds, you must immediately report

(9) A complete loss of information, excluding flickering, from more than 50 percent of an aircraft's cockpit displays known as:

(i) Electronic Flight Instrument System (EFIS) displays;

(ii) Engine Indication and Crew Alerting System (EICAS) displays;

(iii) Electronic Centralized Aircraft Monitor (ECAM) displays; or

(iv) Other displays of this type, which generally include a primary flight display (PFD), primary navigation display (PND), and other integrated displays;

[cowboy]

My experience flying with EFIS displays (Boeing and Airbus) is that they will occasionally "blink". If it only did it once we'd let the next crew know that it had blinked but no loss of data or other problems. If the EFIS "blinked" more than once, or the previous crew had reported the they'd had a blink as well we'd write it up. As far as advising the Feds I think that requirement is for an actual failure of the EFIS so that they can track failure rates.

[FredMa]

Reporting this is not the responsibility of the crew. It is usually picked up and reported by someone that reviews the paperwork. Inspectors or engineering. Who does it, should be spelled out in your company's GMM. Read the GMM and contact the appropriate department to see if anything was done.

[FredMa]

That's General Maintenance Manual, Sorry I couldn't resist blueldr

[Bill Hart]

Sorry I should have added this is an academic question. Thanks for the response.

[blueldr]

OK Fred, but be more careful in the future. You sure as hell don't want to get on my s--t list 'cause it's damn hard to get off.

[GAHorn]

OK Fred, but be more careful in the future. You sure as hell don't want to get on my s--t list 'cause it's damn hard to get off.

No s--t!