SDR DL76G070072

Service difficulty report · Module · Boeing 767332

Difficulty date: February 1, 2007
Submitted: February 6, 2007
Operation: Air carrier
Aircraft: N174DZ
Make and model: Boeing 767332
Aircraft serial: 29693
Aircraft time: 26,278 hours, 11,134 cycles
System (JASC): 2612 · Fire Detection
Part: Module
Condition: Malfunctioned
Location: Control Panel
Stage of operation: CL
How discovered: O
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

FIRE WARNING HORN SOUNDED/AURALLY ALERTED IMMEDIATELY ON LIFT OFF. NO LIGHTS EICAS MESSAGES O ANY INDICATIONS AT ALL WERE APPARENT. THE HORN SOUNDED UNTIL LANDED AND TAXIED BACK. PULLED J34 AND B18 WARN ELEX CBS. HORN SILENCED WHEN B18 PULLED. LANDING WEIGHT 319.9. NO OVERWEIGHT LANDING. REMOVED AND REPLACED PWR SUPPLY MODULE B AND ENG/CARGO FIRE TEST PANEL. ALL OPS CHK NML. TEST OPS NML FIRE WARNING SHUTS DOWN.