Service difficulty report · Controller · Boeing 7474KZF

Difficulty date
April 2, 2020
Submitted
April 6, 2020
Operation
Air carrier
Aircraft
N406KZ
Make and model
Boeing 7474KZF
Aircraft serial
36133
Aircraft time
39,768 hours, 8,048 cycles
Part
Controller
Part number
79275515
Part serial
2008030327
Condition
Malfunctioned
Location
Bleed Air Sys
Stage of operation
CL
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

#4 ENG BLEED OVERHEAT MESSAGE(<P>REMOVED AND REPLACED #4 PRV AND #4 PRV CONTROLLER AND THEN PERFORMED OPERATIONAL CHECK PER AMM 36-11-19/401 AND AMM 36-11-20/401 (PRV OFF PART: PN 802170-12, SN 98080594).</P>)

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