SDR UIEA2017112702297

Service difficulty report · Shutoff Valve · Boeing 76733A

Difficulty date: November 25, 2017
Submitted: November 27, 2017
Operation: Air carrier
Aircraft: N1997A
Make and model: Boeing 76733A
Aircraft serial: 27310
Aircraft time: 92,847 hours, 18,382 cycles
System (JASC): 3610 · Pneumatic Distribution System
Part: Shutoff Valve
Part number: 80217010
Part serial: 960112
Condition: Malfunctioned
Location: Left Engine
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

DURING CLIMB, THE LT ENG HPSOV MESSAGE ILLUMINATED, MESSAGE WAS PRESENT ONLY DURING CLIMB THRUST. AFTER QRH, THE LT ENGINE BLEED OFF, LT ENGINE HPSOV CONTINUED TO DISPLAY DURING HIGH THRUST SETTINGS, CLEARED AT CRUISE THRUST. REMOVED AND REPLACED THE LT HPSOV IAW AMM 36-11-07. OPS & LEAK CHECKED.

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