SDR I5EA2019072306

Service difficulty report · Sense Line · Boeing 7374B7

Difficulty date: July 18, 2019
Submitted: July 24, 2019
Operation: Air carrier
Aircraft: N802TJ
Make and model: Boeing 7374B7
Aircraft serial: 24874
Aircraft time: 52,088 hours, 35,102 cycles
Engine: Ge CFM56*
Engine time: 45,238 hours, 29,587 cycles
System (JASC): 3620 · Pneumatic Indicating System
Part: Sense Line
Condition: Loose
Location: Bleed Air Sys
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: B

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

What was found

DISCREPANCY: FL 310 CLIMBING, CABIN BEGAN TO CLIMB UNCONTROLLABLY, RT PACK WENT TO ZERO. CORRECTIVE ACTION: PERFORMED TROUBLE SHOOTING FOUND HEAVY PENUMATIC LEAK ON RIGHT ENGINE UNDER PRE COOLER VALVE. TIGHTEND SCNSING LINE, OPERATIONAL CHECK FOUND NORMAL. RT PACK WORKING OKAY IAW AMM 36-12-25 AND AMM 71-00-00.

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