Service difficulty report · Overheat Loop · Boeing 7272M7

Difficulty date
December 27, 2007
Submitted
December 28, 2007
Operation
Air carrier
Aircraft
N750DH
Make and model
Boeing 7272M7
Aircraft serial
21951
Aircraft time
39,318 hours, 21,873 cycles
Engine
Pwa JT8D15A
Part
Overheat Loop
Condition
Misrouted
Location
Nr 1 Nacelle
Stage of operation
CR
How discovered
O
Nature of condition
W, N
Precautionary procedure
E

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

What was found

NR 1 STRUT OVERHEAT LIGHT AFTER T/O PERFORMED NORMAL SHUTDOWN NR 1 ENGINE PER PROCEDURE. FOUND 4 DUCT CONNECTIONS LEAKING ON DUCT FROM PRECOOLER TO THE ENG. REMOVED AND REINSTALLED DUCTS PER 727 M/M 36-00-01 (DUCTS WERE MIS-ALIGNED) ALSO FOUND NR 1 PYLON OVERHEAT LOOP MIS-ROUTED-REROUTED PER 727 M/M 26-14-01. SYS GRND CKS GOOD AFTER 10 MIN AT TAKEOFF PWR PER M/M 36-00-00 AND M/M 26-14-00. OK FOR CONTINUED SERVICE.

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