Service difficulty report · Warning System · Boeing 7673JHF

Difficulty date
May 28, 2019
Submitted
May 30, 2019
Operation
Air carrier
Aircraft
N643GT
Make and model
Boeing 7673JHF
Aircraft serial
37809
Aircraft time
14,974 hours, 4,244 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
Stage of operation
CR
How discovered
O
Nature of condition
N
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

STATUS MSG "R ENG HPSOV". (<P>UNABLE TO DUPLICATE. R ENG HPSOV SYSTEM GND CHECKED OK IAW AMM 36-11-00.</P><P>LP 954853 - M3: BITE AIR SUPPLY MODULE IAW FIM 36-10 FT 843, FOUND NO FAULTS. INSPECTION AND MANUAL CRANKING R ENGINE HPSOV FOUND SATISFACTORY IAW AMM 36-11-07. INSPECTION OF R ENG AIR SUPPLY CONTROL CARD ASSY NORMAL IAW AMM 36-11-12. AIR SUPPLY MODULE BITE, NO FAULT AFTER POWER UP CHECK. A/C OK FOR SERVICE. </P><P>LP 954857 - M2: BITE AIR SUPPLY MODULE IAW FIM 36-10 FT 833, NO FAULT. WIRING CHECK HPSOV IAW WDM 36-11-62 AND 36-23-21. HPC POS SW NML, HPSOV V347 TO PC CARD AND BITE MODULE, HPC M7191 TO PC CARD AND BITE MODULE, WIRING CHECK NORMAL IAW AMM 36-11-12 AND 36-23-01. PERFORMED ENGINE RUN UP CHECK, HPSOV FUNCTION NORMAL IAW AMM 71-00-00.</P>)

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