Service difficulty report · Tube · Boeing 75724APF

Difficulty date
November 12, 2020
Submitted
November 13, 2020
Operation
Air carrier
Aircraft
N453UP
Make and model
Boeing 75724APF
Aircraft serial
25474
Aircraft time
34,038 hours, 19,694 cycles
Engine
Rroyce RB211535E4
Part
Tube
Condition
Leaking
Location
Rt Engine
Stage of operation
CL
How discovered
O
Nature of condition
R, J
Precautionary procedure
B, A

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

What was found

INSPECTION TYPE: NA DIVERSION, AC OOS. EMERGENCY DECLARED, NO EMERGENCY EQUIPMENT USED. IN CLIMB & WHEN LEVEL AT FL350 HAD ENGINE INDICATIONS: LT ENGINE EPR 1.73, N1 96.5, EGT 669, N2 89, N3 89, FF 7.0; RT ENGINE EPR 1.71, N1 690, EGT 460, N2 72, N3 77, FF 2.8. TOOK A 2 KNOB WIDTH SPLIT ON THRUST LEVER TO ACHEIVE THIS. PERF FIM TASK 73-21-00-815-802-R00 ON NR 2 ENGINE ESN 31770. FOUND FAULT CODE 47 ON RT EEC BITE. EXAMINED P1 TUBE & CONNECTIONS BETWEEN THE P1 PROBE & EPR TRANSMITTER FOR LEAKS, AS PER FIM 73-21-00-301 TABLE 301, EEC FAULT TABLE. FOUND SUBSTANTIAL LEAK. TIGHTENED CONNECTION, IAW AMM 70-31-00. PERFORMED ENGINE T/O POWER TEST 13 AMM 71-00-00. ALL PARAM NORM & MATCH.

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