Service difficulty report · Smoke Warning · Boeing 777222

Difficulty date
June 17, 2002
Submitted
July 16, 2002
Operation
Air carrier
Aircraft
N770UA
Make and model
Boeing 777222
Aircraft serial
26925
Aircraft time
28,134 hours, 5,551 cycles
Engine
Pwa PW4077
Part
Smoke Warning
Condition
False Activation
Location
Cockpit
Stage of operation
CR
How discovered
O
Nature of condition
N
Precautionary procedure
F, A

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

What was found

CARGO FIRE INDICATION, DISCHARGED BOTH BOTTLES. CREW ACTIVATED FIRE EXTINGUISHING SYSTEM AFTER AFT CARGO FIRE INDICATION. BOTH DUMP BOTTLES & 3 METERED BOTTLES WERE DISCHARGED. AIRCRAFT DIVERTED SNN. INSPECTION OF CARGO COMPARTMENT REVEALED NO EVIDENCE OF FIRE. AFT CARGO SMOKE DETECTOR UNIT WAS INSPECTED AND NO DEBRIS OR MOISTURE FOUND IN INLETS OR OUTLETS. SMOKE DETECTOR WAS REPLACED AND UNIT SENT TO OEM FOR FURTHER TESTING.