SDR 2006UALA01537

Service difficulty report · Warning System · Boeing 767322

Difficulty date: August 6, 2006
Submitted: August 15, 2006
Operation: Air carrier
Aircraft: N648UA
Make and model: Boeing 767322
Aircraft serial: 25285
Aircraft time: 59,141 hours, 9,620 cycles
Engine: Pwa PW4060
System (JASC): 2150 · Cabin Cooling System
Part: Warning System
Condition: Activated
Location: Cockpit
Stage of operation: NR
How discovered: O
Nature of condition: J
Precautionary procedure: D

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

What was found

A -FWD EQPT OVHT- EICAS DISPLAYED, SELECTED STBY AND AFTER 7 MINS -FWD EQPT OVHT- MESSAGE RETURNED. APPARENTLY, EICAS MESSAGE APPEARED DUE TO HIGH AMBIENT TEMP AT IAD (99F), & INOP APU BLEED FOR AIRCONDITIONING ON GROUND. SUPPLIED GROUND A-C, RESET EQUIP COOLING SYSTEM, & MESSAGE DID NOT RETURN. HOT DAY & INOP APU CAUSED OVERHEAT.