SDR UIEA2020120402527

Service difficulty report · O-Ring · Boeing 76731B

Difficulty date: December 3, 2020
Submitted: December 7, 2020
Operation: Air carrier
Aircraft: N1361A
Make and model: Boeing 76731B
Aircraft serial: 26265
Aircraft time: 93,097 hours, 20,545 cycles
System (JASC): 2150 · Cabin Cooling System
Part: O-Ring
Part number: 460400
Condition: Damaged
Location: Lt A/C Pack
Stage of operation: NR
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

LEFT PACK INOPERABLE ITEM 2-TRANSFERRED TO MDDR NR 138933, IAW DDG 21-51-01-01, CAT C, DUE 14DEC20. COMPLIED WITH MX ACTIONS. 04DEC20 LOG 1235909 ITEM NR M3 IAH. REMOVED AND REPLACED O-RINGS TO AIR CYCLE MACHINE DUCTS, IAW AMM 21-51-03. OPERATIONS CHECK GOOD. NO FURTHER DEFECTS AT THIS TIME. THIS CLEARS MDDR NR 138933. NOTIFIED DISPATCH.

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