SDR EIAA20090057SUP

Service difficulty report · Coalescer Bag · Boeing 747273C

Difficulty date: May 11, 2009
Submitted: May 14, 2009
Operation: Air carrier
Aircraft: N471EV
Make and model: Boeing 747273C
Aircraft serial: 20651
Aircraft time: 1,005,748 hours
System (JASC): 2170 · Humidity Control System
Part: Coalescer Bag
Condition: Contaminated
Location: Nr 1 Acm
Stage of operation: CR
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

DURING HIGH POWER SETTING (1.45 AND ABOVE) A SWEET ODOR OF OIL ENTERS AIRCRAFT. SIGNS OF OIL LEAK AT NR 1 PACK ACM AND DUCTING, DEACTIVATED NR 1 PACK, DEFERRED AS PER DDPG 21-1-2A. TRANSFERRED TO DMI 008, AS PER MEL 21-1-2C, CAT D, DUE DATE 9-8-9, INSTALLED PLACARD. REACTIVATED NR 1 PACK IAW MM 21-51-00. REMOVED AND REPLACED NR 1 ACM COALESCER BAG IAW MM 21-51-05. OPERATED NR 1 PACK IAW 21-51-00, OPS CHECK NORMAL, DMI CLEARED, PLACARDS REMOVED.