SDR UIEA2019080134899

Service difficulty report · Warning Message · Boeing 76733A

Difficulty date: July 30, 2019
Submitted: August 1, 2019
Operation: Air carrier
Aircraft: N1439A
Make and model: Boeing 76733A
Aircraft serial: 28495
Aircraft time: 69,955 hours, 16,356 cycles
System (JASC): 3610 · Pneumatic Distribution System
Part: Warning Message
Condition: False Activation
Location: Rt Shutoff Valve
Stage of operation: CR
How discovered: O
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

RIGHT ENGINE HPSOV MESSAGE DISPLAYED ON EICAS, IN FLIGHT. PERFORMED AIR SUPPLY BITE PROCEDURE IAW FIM 36-20-00/101. FOUND RH SYS PRV LIGHT ILLUMINATED. PERFORMED MX ACTIONS IAW DDG VOL. 2 36-11-08-01-01A. REACTIVATED R HPSOV. PERFORMED BITE AIR SUPPLY MODULE, NO DEFECTS NOTED IAW AMM 36-20 FT 804. OPS CHECK GOOD, NO MSGS. PERFORMED ENG RUN IAW AMM 71-00-00, NO FAULTS NOTED.

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