SDR 9721376641

Service difficulty report · Pneumatic Syst · Boeing 747212B

Difficulty date: November 12, 1997
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N641NW
Make and model: Boeing 747212B
Aircraft serial: 21941
System (JASC): 3610 · Pneumatic Distribution System
Part: Pneumatic Syst
Condition: Malfunctioned
Location: Nr 2 Engine
Stage of operation: CL
Nature of condition: N
Precautionary procedure: A

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

What was found

DURING CLIMB, THE NR 2 ENGINE FIRE WARNING LIGHT ILLUMINATED. REDUCED POWER TO IDLE ON NR 2 ENGINE AND RETURNED TO NRT. AIRCRAFT LANDED WITHOUT INCIDENT. REPLACED THE NR 2 ENGINE PRESSURE RELIEF VALVE, HIGH STAGE VALVE, AND HIGH STAGE CONTROL. EXACT PART CAUSING EVENT TO BE DETERMINED.

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