SDR ANCF200000002

Service difficulty report · Controller · Boeing 767*

Difficulty date: November 9, 2000
Submitted: November 10, 2000
Operation: Air carrier
Aircraft: N421AV
Make and model: Boeing 767*
Aircraft serial: 25421
Aircraft time: 30,358 hours, 7,175 cycles
Engine: Pwa PW4056
Engine time: 27,017 hours, 7,377 cycles
System (JASC): 3610 · Pneumatic Distribution System
Part: Controller
Part serial: 831113
Condition: Malfunctioned
Location: Lt Engine Bleed
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

DURING CRUISE, LT ENGINE BLEED OFF DISPLAYED AND ENGINE BLEED AIR VALVE OFF LIGHT ILLUMINATED, WITH SWITCH ON. DUCT PRESS WAS ZERO PSI, NACELLE ANTI-ICE OPERATION NOT CHECKED. DURING GROUND CHECK FAIL HPSOV AND EICAS MESSAGE. IAW AMM 36-11-07 PAGE 401, THE CONTROLLER HPSOV AND HPSOV WERE REPLACED AND LT ENGINE WAS RUN, TEST ON GROUND WAS SATISFACTORY IAW AMM 71-00-00, THE AIRCRAFT WAS RETURNED TO SERVICE.

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