Service difficulty report · Control Valve · Boeing 75733N

Difficulty date
July 17, 2007
Submitted
July 31, 2007
Operation
Air carrier
Aircraft
N552TZ
Make and model
Boeing 75733N
Aircraft serial
32586
Engine
Rroyce RB211535E4
Part
Control Valve
Part number
3987505
Part serial
1974Q
Condition
Unserviceable
Location
Rt A/C Pack
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

EICAS MSG RT PACK TEMP DISPLAYED R PACK INOP LGT ILLUM. LT EXSITING WHEN STBY SELECTED. OPERATED NORMAL IN STBY. REPLACED RT PACK TEMP CONTROL VALVE IAW MM 21-51-12. (K)

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