Service difficulty report · Engine · Boeing 747273C

Difficulty date
May 11, 2009
Submitted
May 12, 2009
Operation
Air carrier
Aircraft
N471EV
Make and model
Boeing 747273C
Aircraft serial
20651
Aircraft time
1,005,780 hours
Engine
Pwa JT9D*
Part
Engine
Condition
Stalled
Location
Nr 2
Stage of operation
DE
How discovered
O
Nature of condition
Y
Precautionary procedure
O

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

What was found

AT FLT LEVEL 280 DURING DESCENT WHEN POWER WAS PARTIALLY REDUCED, NR 2 ENG STALLED. N1 40 PERCENT, EGT 850, TAT-16. ENG WAS SECURED AND RESTARTED IN ACCORDANCE WITH ALL CHECKLIST, INFLIGHT START PERFORMED AND NR 2 ENG RETURNED TO NORMAL OPERATION. PERFORMED DETAILED INSPECTION OF INLET AND EXHAUST, NO DEFECTS NOTED. VERIFIED THADEM BLEED VALVES ARE NOT CLOSED DURING START OR IDLE. CHECKED EVC SYSTEM VANE ARM UNISON RING LINKAGE AND ACTUATOR ROD FOR CONDITIONS AND SECURITY, ALL OK. CHECKED EVC FILTER FOR CONTAMINATION, NONE FOUND. CLOSED AND SECURED COWLS, REF MM 71-00-43, PAGES 102-107.