Service difficulty report · Bypass Valve · Boeing 7879

Difficulty date
January 29, 2026
Submitted
February 2, 2026
Operation
Air carrier
Aircraft
N26960
Make and model
Boeing 7879
Aircraft serial
36408
Aircraft time
48,292 hours, 4,604 cycles
Part
Bypass Valve
Part number
7010128H03
Part serial
HSC22447
Condition
Faulted
Location
Zone 100
Part time
34,667 hours, 5,368 cycles
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

CONDENSER INLET SENSOR R STATUS MSG DISPLAYED, DUE TO LOW LIMIT VALVE R HAS BEEN DEACTIVED IN OPEN POSITION AS REQUIRED PER DDG 21- 52-05. ACPD AS REQUIRED PER DDG 21-52-05. REQUESTING MEL CARD 2152BL. TOMC APPROVES MEL 2152BL FOR RH PACK CONDENSOR INLET SENSOR MSG. COMPLIED WITH MEL 2152BL. PLACARD INSTALLED R LOW LIMIT VLV REPLACED ON LP 7736927. CONDENSER INLET SENSOR CONNECTOR RECONNECTED. NO STATUS MESSAGE AND EXISTING FAULT. MEL REVERSED.

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