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Aero Precision provides OEM part support for military aircraft operators across more than 20 aircraft

pjvr99

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Posts posted by pjvr99

  1. Company ordered all 55 and older to stay home for 2 weeks + several others

    that had been to high risk countries before the government suspended all

    international flights to and from Saudi Arabia. So far, not too bored ...

     

    • Like 1
  2. TO's tell us 1 minute ON, 1 minute OFF, 1 minute ON, 5 minutes OFF, 1 minute ON, 30 minutes OFF ......

     

    Having said that, a starter can fail at any time. I have had the starter shaft shear on 1st attempt, it has

    also sheared at 40% during normal starting. During compressor wash, the load on the starter is more than

    doubled so it has a much greater chance of failing. I don,t think there is much to be done in terms of 

    extending life beyond what we already do .....

     

    We follow a slightly modified procedure to what is stated in 2J-T56-101CL-1:

    Allow detergent mix to enter engine until it is flowing from intake, then motor engine for 1 minute, allow

    minimum 5 minutes soak time (or move on to next engine).

     

    Open the rinse water and wait for clean water to flow from the intake, motor engine for 1 minute, wait 1 minute

    or move on to next engine. Keep doing this until clean water is coming out of turbine. During the last motoring,

    stop the water at +-30 seconds but keep motoring until 1 minute to vent excess fluids. Complete dry-out run

    withing 4 hours

     

    • Like 1
  3. Engine will be cold at 1st start making harder for starter to turn engine. Also FCU will be cold making CIT and CIP bellows

    respond differently.  2nd and 3rd start components, gearbox etc. will still be warm and make spin-up easier. Adjusting

    TD amp will make little difference as it is only limiting the maximum fuel flow during startup. I see this regularly

    on both A15 and D22A engines.

     

    As long as start TIT is between 750 and 830 (780 to 810 desired) and start time is between 39 and 61

    seconds (GTC/APU start), there is nothing to be concerned about.

     

  4. Had it translated,

     

    Peter, I think he mixed up with different things: translation: the plane leand left, engines are at 19600lbs, brake applied...
    3 services shock absorbers serviced, brake lock pressure ok...
    Dissymetrie fuel checked with manual and ok..
    Do you have a solution or experience?

     

    As I understand it:

     during runup with engines at 19600"lb, aircraft was left wing low. Fuel quantity balance was manually/dipstick checked ok. struts were serviced/checked 3 times. brake pressures ok. 

  5. if by weather you mean cloud or rain, changes in air density going into compressor will be

    detected by fcu cip & cit probes. as the throttle is already pulled back, a weak valve housing

    may not be able to hold the rpm steady. 1c-130h-2-71jg-00-1 gives rpm 1.5% total travel

    with throttle below flight idle, and 1.0% with throttle above x-over and more than 8000"lb

    torque. valve housing change is the quicker fix, but you may end up changing fcu. as an

    after-thought, check the time on dome quad-seals. 

     

     

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