Questions tagged [aircraft-maintenance]

Use this tag for questions pertaining to the maintenance of aircraft, including owner-performed maintenance and required inspections (annual, 100-hour, etc.)

30 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
4
votes
0answers
486 views

How to write a good aircraft maintenance work card?

Is there any guidance for writing the aircraft maintenance work cards? I want to find out some articles or books talking about this topic as I just start new job on it. How to write a good aircraft ...
4
votes
0answers
94 views

What is the FAA Approval Basis for an FMS upgrade on a Part 25 aircraft?

Does anyone know of a recent approval for an upgrade from a Universal UNS-xx FMS to a Universal UNS-1Ew FMS on a FAA registered aircraft, other than a TC, TC update or an STC? I am looking for the ...
4
votes
0answers
292 views

What is the most commonly occurring fault with this type of electrically driven gyro?

I have an examination tomorrow about advanced avionics systems (EASA module 13) and we are required to troubleshoot a fault with the compass system. What is the most commonly occurring fault with a ...
4
votes
0answers
963 views

What is “one flat movement” of a screw on the fuel control unit?

I'm looking to do a N1 low idle speed adjustment oa King Air B350 with the PT6A-60A engine. There is a note saying that one flat movement of the low idle speed screw in the FCU increases N1 by 3.5% ...
3
votes
0answers
129 views

Do aircraft manufacturers take steps to prevent pests like geckos from damaging the electronics?

Many Australians are suffering huge bills due to geckos getting into the circuit boards of their air conditioning units. Of course this is highly profitable for A/C manufacturers as they supply ...
3
votes
0answers
112 views

What causes this error on the Collins 60A ADF system?

We've got a BAE Jetstream 32 equipped with a dual Collins 60A ADF system, and the co-pilot's side control head is: displaying "FLAG 10" when we press the TEST button; We looked up the error code, ...
3
votes
0answers
61 views

Statistically, what are the failure points on sUAS (drone) aircraft?

It is generally recognized that operator error and unairworthy aircraft are the principle factor in sUAS (drone) system failures and accidents. But looking just at the hardware, are there published ...
3
votes
1answer
217 views

HSI KG 525 PNI non slaved or only slaved?

I'm in Germany and currently on a project about the avionics of an older airplane (PA28). Here is a link to a former reddit question. My Prof. and me want to update the Avionics now - he asked me to ...
2
votes
2answers
244 views

What certifications must one have to repair/alter propellers and instruments?

According to 14 CFR 65 Subpart D A certificated mechanic may perform or supervise the maintenance, preventive maintenance or alteration of an aircraft or appliance, or a part thereof, for which he ...
2
votes
2answers
332 views

What names are used for certified “mechanics”?

While watching a documentary on the the UK Red Arrow aerobatic team, mechanics were sometimes called "tradesmen", "technician", or "engineer". In the US they are commonly called "aircraft mechanics" ...
2
votes
1answer
126 views

Is there a standard install direction of the abradable shroud honeycomb on a CF6-80c2 engine?

Is there a standard install direction of the honeycomb cells on the Fan Forward case on the CF6-80C2 abradable shroud section? I have seen engines that the honeycomb cells run point to point front ...
2
votes
0answers
1k views

What are the differences between an EASA part-66 license and FAA A&P Aircraft Mechanic License?

what is the difference between EASA part-66 license and FAA A&P Aircraft Mechanic License? Are there any reasons for a company or individual to opt for the one or the other or both?
1
vote
1answer
56 views

What is the most critical data to measure for a predictive maintenance model for a drone?

I'm looking at making a predictive maintenance model for a drone (quadcopter mainly but can include others) I'm wondering what is the most common causes of failure due to "overflying". (not including ...
1
vote
0answers
39 views

Is Function Item Number the same as part number but for components?

I found in the Airbus AMM in the Component Location section the acronym FIN (Function Item Number) and I wonder if it's Airbus way to refer to a part number that is not an expendable part (They use P/...
1
vote
0answers
109 views

Why doesn't GA aircraft use the JASC/ATA document standard?

By international law large aircraft are required to categorize aircraft information using a standard called the ATA document numbering system (Air Transport Association). The ATA document chapters ...
1
vote
0answers
140 views

What could cause an engine shutdown on a Q400 with CDS codes 732, 907, 915 and 938?

A Bombardier Q400 displays error code 938 on the Central Diagnostics System(CDS), which is attributed to turbomachinery chip detector. An examination shows debris in the detector hitch which is ...
1
vote
0answers
63 views

Is there a standard place to find detailed wiring circuit and component information for different aircraft?

Today I was looking into the systems that are affected by the STDBY ATTD (#1 and #2) circuit breakers in a SR22 and I accidentally stumbled upon something that I find very interesting and I've been ...
1
vote
0answers
389 views

Can MIL-PRF-5606H hydraulic fluid be used in place of MIL-PRF-5606?

Can MIL-PRF-5606H hydraulic fluid be used in place of MIL-PRF-5606? My airplane is a 1966 Piper Cherokee 6.
1
vote
0answers
160 views

How does an operator change an aircraft's maintenance program from high-interval to low-interval?

I have question for CAMO operators. If you have a maintenance program that is high-interval and the aircraft operates in excess of the maximum permissible hours and cycles you must go to a low-...
1
vote
0answers
380 views

Can an avionics technician work on Part 91 aircraft after a failed drug test?

I am trying to find out if it is legal to perform maintenance on small Part 91 aircraft performing avionics and electrical airframe repairs if I have failed a follow up drug test while employed by a ...
0
votes
1answer
33 views

Where can I find details about a Cambridge Scientific Instruments Fuel/Air ratio Indicator?

In our restored Harvard Texan T-6 WW2 trainer aircraft, a Fuel/Air Ratio Indicator was installed. We cannot locate the wiring diagram of this system or information for the Cambridge Scientific ...
0
votes
0answers
22 views

What is the relation of AIR BLEED IN message with the pack system on an Airbus A320?

Before the power-up, if the pack switches are set to the ON position and the aircraft is powered up with the APU bleed off, is there a chance that the AIR BLEED IN maintenance message comes up on ...
0
votes
0answers
72 views

What is the service cycle or interval of the Landing gear of an A380 and 747-800

What is the service cycle or interval of the Landing gear of an A380 and 747-800, i.e how long between service, eg after how many take offs and landings with particular reference to bearing checks and ...
0
votes
0answers
113 views

What is the procedure for doing a symmetry check on a Cessna 172?

I'm trying to find the steps to do a symmetry check of a Cessna 172. Or a form, or the section of the maintenance manual.
0
votes
0answers
65 views

Are there required standards for gate power cable maintenance?

I am looking for reference(s) addressing gate power cable maintenance, for both 28V DC and 400Hz. Do the FAA or any manufacturers have standards for measuring the connector pins to determine wear?
0
votes
0answers
101 views

What is the official EASA definition of A, B, C and D checks, or where do I find it?

Schedule Maintenance is divided into many different checks. What is the official definition (EASA website, not wikipedia) of A, B, C and D check, or where do I find it?
0
votes
0answers
40 views

If my company has a Line Maintenance Approval, can they perform a Landing Gear replacement in the Flight Line?

I am not sure if a landing gear replacement is performed in the line or base. Also is a line maintenance approval enough? What are the reasons for your answer? Thank you!
0
votes
0answers
55 views

How to perform an operational test on the attitude and heading indicators?

I just need to know how to perfom it. The only thing I know is that you have to remove them and take them to a "lab".
0
votes
0answers
48 views

May two different component manufacturers have the same component maintenance manual number?

Is it allowed for two different component manufacturer to have the same Components Maintenance Manual number?
-2
votes
1answer
275 views

Where can I find an example of a propulsion maintenance task card?

I'm looking for an example of a task card for aircraft propulsion maintenance, e.g. propeller or engine maintenance. I've found examples for wings and airframes, but not for propulsion.