SDR UIEA2019062524557

Service difficulty report · Warning Message · Boeing 76731A

Difficulty date: June 22, 2019
Submitted: June 25, 2019
Operation: Air carrier
Aircraft: N662GT
Make and model: Boeing 76731A
Aircraft serial: 27619
Aircraft time: 74,985 hours, 14,829 cycles
System (JASC): 3610 · Pneumatic Distribution System
Part: Warning Message
Condition: False Activation
Location: Bleed System
Stage of operation: NR
How discovered: 9
Nature of condition: N
Precautionary procedure: O

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

What was found

DURING CRUISE FLT AT FL 360, 2 HOURS INTO FLT, EICAS MESSAGE FOR LEFT BLEED ISOLATION VALVE, AND VALVE LIGHT IN SWITCH ILLUMINATED. ACCOMPLISHED BITE TEST OF AIR SUPPLY MODULE. RESET SYSTEM. PERFORMED OPERATIONAL CHECK OF BLEED SYSTEM. NO DISCREPANCIES NOTED IAW AMM 36-23-00.

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