SDR 2004UALA00248

Service difficulty report · Smoke · Boeing 777222

Difficulty date: March 15, 2004
Submitted: April 6, 2004
Operation: Air carrier
Aircraft: N211UA
Make and model: Boeing 777222
Aircraft serial: 30217
Aircraft time: 12,159 hours, 3,076 cycles
Engine: Pwa PW4077
System (JASC): 2120 · Air Distribution System
Part: Smoke
Condition: Detected
Location: Cockpit
Stage of operation: DE
How discovered: O
Nature of condition: B
Precautionary procedure: O

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

What was found

SMOKE ORIGINATE MOMENTARILY AT BEGIN OF DESCENT ON CAPT'S SIDE IN COCKPIT. APU, SHOULDER-FOOT HEATERS OFF. THE REPORT OF SMOKE WAS ON A FLIGHT FROM LAX TO HNL. HNL MX CONDUCTED A COMPREHENSIVE CHECK OF NR 1 ENGINE FOR OIL LEAKS, BUT FOUND NONE. MAINTENANCE RAN THE ENGINES ON THE GROUND AND ISOLATED BOTH PACKS, BUT COULD NOT DUPLICATE THE PROBLEM. AIRCRAFT 2511 RETURNED TO REVENUE SERVICE WITHOUT FURTHER SMOKE OR SMELL REPORTS SINCE 3/16/04.