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  1. FieldTeam

    Loctite for securing bearing

    You can bond a bearing in a housing using Aerobond 223A and B catalysy or EA901 and B1 cat. Also BMS5-92 or BMS5-25 adhesive can be used in some installations. Boeing SOPM 20-50-03 taklks on it I believe. My SRM has details for bonded bearing installation. Couldn't the bearing have been staked...
  2. FieldTeam

    Wiring connector keying / clocking assignments

    SAE-AS 50881C Connectors used to provide separation of or connections to multiple electric circuits in the same location shall be installed so that it will be impossible to mate the wrong connector in another mating unit. It is preferred that wiring be routed and supported such that an improper...
  3. FieldTeam

    MS18029

    R & B ELECTRONICS, INC. 741 E PORTAGE AVE SAULT SAINTE MARIE, MI 497832439 http://www.rbesoo.com/
  4. FieldTeam

    Composites in SRMs?

    The USAF uses T.O. 1-1-690 "General Advanced Composite Repair Processes Manual". This is a general Technical Manual that supplements the specific SRM and encompasses repairs to graphite, buron and aramid/epoxy advanced composite materials. Personnel qualifications and certifications are...
  5. FieldTeam

    Engine Mount Mis-alignment

    Hilltopkid did not say if the engine will align to the mount now. It sounds like he got the correct engine with a mount made for a different aircraft. I hope he is not thinking of returning the mount and not letting the manufacturer know of the stress the mount was put through. "hey, I got the...
  6. FieldTeam

    Information requested for "Stabilant 22"

    In Madvlad's link, figure 3.0 shows the results of a WPAFB electrical connector CPC validation study. In the referenced chart (which appears to be a cut from a presentation) they list stabilant 22, manufactured by D.W. Electrochemicals, as not recommended for use (there was no MIL spec...
  7. FieldTeam

    A320 crash in the Hudson River - history of stalls?

    AD2009-01-01 effective Dec 31 08. On 15Dec08 an A321 powered by a CFM56-5B1/P experienced HPC stalls on both engines during climb out. The AD is concerned about EGT margin greater than 80degC. Greater than 80DegC requires a borescope insp. Failed borescope engine to be replaced and no aircraft...
  8. FieldTeam

    Fuel tank wire testing - best practices

    Only posting what is considered reliable technical source data. Copy from referenced T.O.: a- High potential voltage or insulation breakdown testing of aircraft electrical wiring and cabling will be conducted as a last resort after all previous methods of detecting faulty cabling have been...
  9. FieldTeam

    Interference affects on Pitot probe

    I've seen examples of what rb1957 stated on USAF aircraft, where the probes, which normally would be positioned on the fuselage aft of the radome (707), are mounted on the wing tips due to nose radome modifications.
  10. FieldTeam

    Effect of Static Electricity on Aerodynamics

    Static charges on aircraft effects radio reception and is no good. Some aircraft incorporate static dissipators to bleed charges from the skin.
  11. FieldTeam

    Small Pin Manufacturing

    Would an Optical Comparator and optical micrometer be useful in measuring, calibrating and inspecting your pins?
  12. FieldTeam

    L-Band Antenna Suppression Line

    The suppression line would be a discreet coming from the RT of your system to the RT's of the TCAS, TACAN..... that would inhibit the associated RT from receiving during the transmit mode.
  13. FieldTeam

    Fuel tank wire testing - best practices

    onemike, Sorry, the company I work for gets these books for me through a contract that does not allow redistribution of any data. I would like to, but can not.
  14. FieldTeam

    sealant removal from a blind fuel tank

    How big are the inlet/outlet? Is the sealant loose that has floated into the holes or excess that has sealed the holes? High pressure air or water can be used to blow out loose sealant. Modify a piece of tubing to direct and blast the sealant out. An Aquamiser can be used to get rid of the...
  15. FieldTeam

    Fuel tank wire testing - best practices

    USAF T.O. 1-1-655, Restricted Use of High Potential Voltage Testing Apparatus on Aircraft Containing Fuel, addresses your question. As a last resort, high potential testers may be used in fuel areas provided they are drained, purged and maintained at less than 20% LEL. Funny thing about the...
  16. FieldTeam

    Engineering Texts or Documents for Liaison Training

    Another consideration (if you haven't already done so) is to reference the general airforce technical orders. These TO's have information that someone in the field can use, together with the aircraft specific SRM's, to direct and reference repairs. The specific airframe -01 T.O. should state...
  17. FieldTeam

    Fuel tank wire testing - best practices

    Fuel probe system can be tested while electrically connected to the aircraft provided there is no fuel or vapor and that the tank is drained and purged to 90PPM (1.5%LEL)or less. We air purge our tanks until this level is met after sumping and de-puddling. (ref USAF TO 1-1-3) The PSD/GTF type...
  18. FieldTeam

    Fuel tank wire testing - best practices

    GTF-6, PSD-60/90 fuel qty test sets, like the barfields posted above. They will tell you if you have a bad probe or wiring problem. You wouldn't want to meg into a probe anyway. FQIS harnesses are wet, but pump/valve wiring is usually in conduit. A DMM will tell you if there is a problem in the...
  19. FieldTeam

    fatigued spar cap angle

    Why would you replace something that passes your inspection, unless driven by an AD, SB or other technical reference? Mikes recommendation of changing all of them seams to be precautionary...but at what cost?
  20. FieldTeam

    Bird Strike Windshield Test Temperature

    As a cross reference, AC 25-21 (certification of transport airplane structures) shows a four pound bird at a velocity equal to the value of Vc at sea level (no temperature). Your requirement is for a 2 pound bird at a velocity equal to maximum approach flap speed (no altitude or temp). Since no...

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