Service difficulty report · Pressure Switch · Boeing 7673CB

Difficulty date
February 16, 2009
Submitted
February 17, 2009
Operation
Air carrier
Aircraft
N592HA
Make and model
Boeing 7673CB
Aircraft serial
33468
Aircraft time
22,620 hours, 4,375 cycles
Part
Pressure Switch
Part number
211C223520
Part serial
C03571A
Condition
Malfunctioned
Location
Hydraulic System
Stage of operation
DE
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

ETOPS SIGNIFICANT SYSTEM - AILERON LOCKOUT ON EICAS AT 8000 AS ACFT SLOWED TO 240 WENT OUT AFTER ABOUT 90 SECONDS. PERFORMED FIM 27-11-00 LRU FAULTS S29 SHOWN. REMOVED AND REPLACED PRESS SW (S29) PER AMM 29-11-19, LEAK CHECK OK. PERFORMED AILERON LOCKOUT TEST PER FIM 27-09-00. TEST PASSED. PERFORMED LOCKOUT ACTUATOR AND MECHANISM TEST PER AMM 27-11-44. OPS CHECK OK FOR SERVICE.

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