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.)

36 questions with no upvoted or accepted answers
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4
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624 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 ...
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109 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 ...
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0answers
2k 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% ...
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87 views

How does the maintenance cost of turboprops compare to turbofans?

I was initially under the impression that the added complexity of gearing in a turboprop would lead to more maintenance. Then I found out geared turbofans are becoming fairly common so there should be ...
3
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0answers
62 views

What are the differences between a compressor wash on wing vs on test bed

I work in an aircraft engine overhaul facility and I’m trying to understand the process of compressor washing engines on Wing compared to washing them in a test bed. What process steps are different ...
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140 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
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0answers
258 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, ...
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64 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
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1answer
334 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
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2answers
218 views

What information is recorded in aircraft sensor and maintenance logs?

I was wondering what the sensor and maintenance logs in an aircraft look like and what are the values logged? Like maybe the engine temperature, altitude, exhaust temperature, etc. I know the data is ...
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83 views

Which dust size causes most damage to turbine engines?

I'm conducting some research on my bachelor's thesis on predictive maintenance and I have so far not been able to find a solution to the following question: Which size of dust is more damaging to the ...
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0answers
110 views

How do jetliners age (major or notable checks and part replacements)?

As commercial airliners can be (and are) operated for many years (or even decades), I've started to ponder - how do they actually age? Or - in other words - what are major or notable maintenance-...
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208 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 ...
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2k 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?
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98 views

For the purposes of complying with an AD, what exactly does "missing and/or incomplete maintenance records" mean?

I'm considering the purchase of a Piper PA-28R Arrow. I calculated the factored service hours which came up to around 2500 or half of the required FSH to make it subject to the recent Piper wing spar ...
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101 views

A320 Avionics Compartment Access Door (Seeking Photo References)

We're software developers currently working on a 3D A320 for training and we're getting quite stuck finding any suitable references of the Aviation Compartment Access Door - specifically both it's ...
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41 views

Is an aircraft maintenance diploma under EASA recognized for studying in the US?

I have a diploma certificate of aircraft maintenance engineering but I studied under EASA. So can I study and take the Bachelor degree in the USA without restarting all my study?
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21 views

Can the FAA 8130-3 have "modified" status if a part is converted by replacing piece-parts from IPC?

I have been trying to identify if the FAA 8130-3 Instructions have some clarity but am unable to deduce if this situation is indeed acceptable. A sequence of events (Of sorts) is given below: A Part ...
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59 views

Does the Flight Acquisition Unit on the Boeing 737 NG stream data?

I noticed on B737-800 entering the flight deck on the right side there is a port Data Loader and I think this is the Flight Acquisition Unit. Is this port used exclusively for loading data to FMCs etc ...
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91 views

How can I convert a SACAA (South Africa) AME license into a Belgium (EASA) licence?

I have a SACAA (South Africa) AME license and would like to convert it into a Belgium EASA licence part 66. What are the steps to follow?
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57 views

What is the typical length of a Transport Category Aircraft Maintenance Manual (# of pages)?

This FAA publication contains the following image: The numbers it lists translate to some very long manuals: 1998: 43,071,266 pages/2,532 manuals = 17,010 pages/manual 2008: 184,068,439 pages/5,500 ...
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60 views

What does "representative sample engine" mean for an overhaul extension?

If the PT6 turbo prop engine is required for an extension for overhauling due to operational reasons, the manual has to be searched if the extension is feasible for the company. The company states ...
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129 views

What replacement wings are available for old F-16s?

Eventually, material fatigue will force any aircraft to either be grounded or have its wings rebuilt, or replaced. And please, correct me if I'm wrong. For the F-16, if one were to replace its wings, ...
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0answers
293 views

What is the service cycle or interval of the Landing gear of an A380 and 747-8

What is the service cycle or interval of the Landing gear of an A380 and 747-8, i.e how long between service, eg after how many take offs and landings with particular reference to bearing checks and ...
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94 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 ...
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0answers
873 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.
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0answers
216 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-...
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28 views

EASA F1 / FAA 8130 Validity

Does anyone know if there is a set guideline / ruling for how long a EASA F1 / FAA 8130 is valid for between CRS issue of the component say from overhaul to when the component is actually fitted to ...
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71 views

What are the steps to change the map light bulb in a Cessna T182T?

T182T has "eye socket" map light. I have removed the ceiling panel and a ring that holds the whole fixture in, but I cannot access the bulb. How do I change the bulb in the map light?
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75 views

When is most of maintenance data collected

During which phase of flight is most of the maintenance data collected? Ascend, cruising or descend? Is there a website where I can find such information?
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70 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?
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169 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?
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60 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".
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52 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?
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1answer
87 views

Can line and light maintenance be combined?

Is there any possibility to combine line maintenance and light maintenance (containing A, B and C check) under the name of line and light maintenance? In real is there any company which possesses a ...
-2
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1answer
344 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.