Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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.)

13
votes
2answers
3k views

How frequently are airplane windows cleaned?

When you’re driving on the highway, after sometime unwanted insects and dirt accumulate on your windshield. When you stop over at a gas station, you might clean it off. It’s likely the case for ...
4
votes
1answer
310 views

What aircraft maintenance logs should I have available for a private checkride?

I’m about to do my Private Pilot Checkride in my own plane. I’ve been trying to find a list of things that will be needed for the Checkride in the logbook, as I had thought it was an updated annual, ...
2
votes
2answers
234 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" ...
1
vote
1answer
160 views

How to measure the aircraft maintenance cost of a operator? [closed]

How to measure the aircraft maintenance cost of a operator? What tool or mechanism can be used to measure such performance? Or what index can be used to determine the performance?
1
vote
2answers
77 views

What requirements do A&Ps (AMT) have to work on avionics?

Is there any additional requirement for A&Ps to work on avionics or is that even a totally different license? I just wonder why only a few A&Ps I met, also do avionics.
0
votes
0answers
148 views

What is the procedure to change EASA part 66 basic AML from one issuing authority to another?

What is the procedure to change EASA part 66 basic AML from one issuing authority to another? Is it really possible to do?
7
votes
1answer
417 views

Most time-consuming tasks while a plane is on the ground

How long should commercial planes stay on the ground after landing before they can take off again? What is the most time-consuming thing/task/operation that happens during this time? Is downloading ...
1
vote
0answers
77 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 ...
-3
votes
1answer
241 views

Is it possible to remove an A320's main gear using one main jack and one nose jack?

I have only one set of jacks (nose-main LH and RH) and I need to swap the main landing gear from one aircraft to another. I don't have a dummy landing gear. Is this possible?
1
vote
1answer
162 views

How are the NEO LEAP-1A engines attached on the A320?

How many bolts hold the NEO LEAP-1A engine to the pylon at the forward mount and at the aft mount?
-1
votes
1answer
124 views

In BGA or ATR's what are the major causes of ODOR in Cabin or Smoke in Cabin? [closed]

In BGA or ATR's what are the major causes of ODOR in Cabin or Smoke in Cabin? There are some of the maintenance activities that are related to removal of Engines or APU. Removal reason: Smoke in cabin ...
2
votes
1answer
112 views

When did ATA introduce ATA Chapters?

When did ATA introduce the ATA chapters and since when was it used by all manufacturers? Thanks!
1
vote
0answers
142 views

How are turbine blades overhauled?

How are turbine blades overhauled? What techniques are commonly used and how does it affect the integrity of the blade?
0
votes
1answer
125 views

Can I use parachute fabric to cover an aircraft fuselage and wings?

... Are there disadvantages to using parachute fabric to cover an experimental aircraft? So far I observed the following: I believe I put this fabric in an open place for a year I found no cracks ...
30
votes
1answer
4k views

Why are aircraft coloured in yellow during construction, repair or overhaul?

Why are aircraft usually coated with "yellow", while either during construction or repair and overhaul? What exactly is the purpose of it?
1
vote
0answers
112 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 ...
0
votes
1answer
351 views

How are jet engine RPM cycles used to monitor LCF life?

Can someone please define what are N1 and N2 throttle cycles? These are used to keep track of the accumulated low cycle fatigue (LCF) life of rotating components. But I cannot find an exact definition ...
0
votes
1answer
116 views

What skills do aviators have uniquely that could cross over to another industry? [closed]

I have developed sensitivities to several chemicals used in aerospace. I have to make a shift away from our industry, so I would like to know what are qualities in aviators that would be unique and ...
0
votes
1answer
228 views

Where to find the aircraft maintenance manual for the Falcon 2000? [closed]

How can I find a Falcon 2000 aircraft maintenance manual (AMM)?
12
votes
1answer
719 views

How are fuel tanks cleaned out?

One episode of the BBC series "Engineering Giants" featured a BA 747 undergoing a multi-week "D check". Here the inside of a fuel tank was surprisingly clean and dry (to me): ...
1
vote
3answers
314 views

What inspection packages commercial airliners follow which make them more reliable than a C-130?

The Hercules C-130 get unserviceable often due to various technical issues. This causes the flight to be aborted (ground or air abort) due to avionics, propulsion, airframe or electric problems. I ...
1
vote
1answer
97 views

Could maintenance data be downloaded via ATC facilities?

Could aircraft send maintenance data to the airport via ATC facilities (e.g., tower, TRACON, enroute)? Or are they only used for air traffic control?
0
votes
0answers
52 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".
4
votes
0answers
250 views

Why would the engine quit when turning on the R magneto after an overhaul?

I just finished overhauling a Lycoming O-360; it's currently on a stand, i.e. it's not in the aircraft. I replaced the capacitors and point gaps on both the L and R mags. I adjusted the E-gap and ...
1
vote
0answers
53 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
1answer
2k views

What is the difference between GVI and DVI?

In any maintenance program I found some terms like General Visual Inspection (GVI) or Detail Visual Inspection (DVI) or Detailed Inspection (DTI). I want to know the difference between these types of ...
0
votes
1answer
2k views

What is the difference between HFEC and LFEC inspections?

Sometimes we have to do High Frequency Eddy Current (HFEC) or Low Frequency Eddy Current (LFEC) inspections. My question is: what are the major differences between these two types of inspection? Which ...
7
votes
2answers
535 views

Do turnbuckles twist the flight control wires?

When adjusting a turnbuckle on any flight control, we usually use a wrench and turn the hex shaped section of the rod end inserted into the turnbuckle barrel. That flight cable from the turnbuckle is ...
11
votes
1answer
292 views

Do FDRs & CVRs (black boxes) have an in-service life span?

Do Flight Data Recorders (FDRs) and Cockpit Voice Recorders (CVRs), aka black boxes, have an in-service life span? Is it necessary to replace them over time? If so, are there any regulations ...
3
votes
1answer
325 views

How are modern fighters cleaned? [closed]

I found this photo of a fighter jet being cleaned, how does this process work? (usatoday.com)
3
votes
2answers
529 views

Does an overhaul reset the 'life limit' of a turbine engine?

I've come across a very unclear maintenance document. It's often referred to as a "Hard Card" for an Engine Axial Compressor Turbine. This specific part happens to come from a French manufacturer, ...
1
vote
3answers
192 views

What is the real impact of biofuels on aviation?

I have seen tons of initiatives about using biofuels (like the ASTM D7566), but it is operative at large scale?, there is background info about demonstrative flights, but I don’t see a manufacturer or ...
6
votes
1answer
891 views

Can civilians who buy ex-military fighter jets get the necessary maintenance information for them?

I was looking for fighter jets which are available to be bought by private citizens. I was wondering: how would you schedule the maintenance, as most of the jets are ex-military and there are no ...
1
vote
0answers
264 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
135 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-...
0
votes
1answer
268 views

What are various specifications of Engine oil used in Piston and Turbine engine aircraft?

I only know of two types MIL-O-7808 and -23699. Is there anything else ?
4
votes
1answer
216 views

What is the meaning of the term “fly back only” in AMM documents?

I am reading an AMM document and I don't get the ideas below: Examine cracks in area A1 and A3: (a) Accept with an inspection each 100 hours, cracks on the inner or outer shroud if there is: ...
26
votes
3answers
5k views

Why do aircraft piston engines consume so much oil?

This question is related to single/twin piston engine aircraft. After flying in a Cessna 152 and a Piper Dakota I have noticed that they both consume a lot of oil. Oil check is an integral part of the ...
7
votes
2answers
629 views

Can windshield washer fluid be used to deice small airplanes?

This question is related to small single/twin engine general aviation airplanes with aluminium construction. I understand that it is generally not recommended to use windshield washer liquid to deice ...
0
votes
1answer
84 views

Where is the modification of an aircraft from floats to wheels and vice versa logged?

How does a maintenance professional, or pilot if allowed, log the change when the airplane is switched back and forth between land and sea? Do they cite the change in the maintenance logbook as ...
2
votes
1answer
144 views

Does form 337 need to be sent to the FAA prior or after the work has been performed?

Is the Form 337 sent to the FAA prior to the work being performed? Meaning the mechanic awaits the FAAs reply and approval before actually beginning work on the aircraft? Or is the work performed, ...
4
votes
1answer
271 views

How does a mechanic determine if a repair or alteration requires a Supplemental Type Certificate?

How does a mechanic know when they have exceeded what 14 CFR Part 43 allows for a repair or alteration to an aircraft? They have thus entered an area where the repair/alteration is so significant that ...
4
votes
0answers
150 views

Why is colour of aircraft access panel outlines darker than the rest of the aircraft? [closed]

I've seen that in nearly every photo of a dark-coloured aircraft (especially prominent in military jets) its panels have a darker colour compared to the rest of the aircraft. What is the reason for ...
6
votes
4answers
2k views

What is the “on condition” concept of aircraft maintenance?

"On-condition" appears to mean that a component should be "fit until failure" or that the maintenance should only be performed upon failure of the component. This seems problematic. Can someone help ...
1
vote
2answers
301 views

Is it possible for a Citation Jet not to have an APU or AIR COND?

In reviewing a number of CESCOM10 reports it has become apparent that some of the aircraft don't report APU hours (instead they report AIR COND). Is it possible that a Citation Jet doesn't have an ...
4
votes
0answers
402 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 ...
0
votes
1answer
345 views

What is the difference between static and dynamic seals?

What is the difference between static and dynamic seals and How much leakage is allowed past each seal?
2
votes
1answer
384 views

What did a maintenance person put into the engines after landing?

I was recently flying on a A320-251N and directly after landing & coming to a halt at the gate, a maintenance person approached the engines carrying a box of something that looked like paint cans, ...
4
votes
1answer
452 views

How far can A&P mechanics operate aircraft under US regulations?

Anytime an A&P mechanic wants to test the updates/fixes made to an aircraft's systems or any part for that matter, what are the laws (at least under the FAA) that legally allow them to operate an ...
6
votes
1answer
170 views

What are the requirements for grass height around runways and taxiways?

I am looking for the requirements for grass heights around runway and taxiway edges, signs and lights?