Service difficulty report · Combustor · Boeing 727222

Difficulty date
October 29, 1998
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N7279U
Make and model
Boeing 727222
Aircraft serial
21557
Engine
Pwa JT8D15
Part
Combustor
Part number
JA803794
Condition
Cracked
Location
Nr 2 Engine
Part time
10,964 hours
Stage of operation
IN
Nature of condition
O
Precautionary procedure
K

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

What was found

NINE INCH CIRCUMFERENTIAL CRACK IN NR 5 COMBUSTION CHAMBER CAN OF NR 2 ENGINE. *S/D* SHOP INSPECTION OF THE NR 5 BURNER CAN REVEALED THE CRACK TO BE IN THE 2-3 LINER UNDER THE AIR SCOOP. CRACKING IN THIS AREA IS NOT UNCOMMON, ALTHOUGH AT 10,964 HOURS THE CRACKS ARE USUALLY LESS THAN 9 LONG. FURTHER INSPECTION OF THE CAN AND ENGINE REVEALED NO OTHER RELATED ABNORMALITIES. THE COMBUSTOR CAN ISOTOPE INSPECTION RESULTS WILL CONTINUE TO BE MONITORED CLOSELY.