Service difficulty report · Actuator · Boeing 737890

Difficulty date
May 8, 2012
Submitted
May 17, 2012
Operation
Air carrier
Aircraft
N513AS
Make and model
Boeing 737890
Aircraft serial
35192
Aircraft time
13,810 hours, 4,442 cycles
Engine
Cfmint CFM567B273
Part
Actuator
Part number
6416744
Part serial
1081550
Condition
Faulty
Location
Ram Air Door
Part time
80,210 hours, 52,656 cycles
Stage of operation
CL
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

DURING CLIMB AWAY FROM SEA THE RIGHT "RAM DOOR FULL OPEN" LIGHT STAYED ON THROUGH 11 500 THEN ONLY AT APPROXIAMETLY 32 000 IT CAME ON AGAIN TILL LEVEL OFF AT 36,000. IT EXTINGUISHED AND STAYED OUT THROUGHOUT CRUISE FLIGHT. LIGHT CAME ON BELOW 6,000 DURING DESCENT. ACFT GROUNDED. REPLACED RT RAM AIR INLET ACTUATOR IAW AMM 21-51-21, PAGEBLOCK 401. VERIFIED RAM AIR INLET ACTUATOR INSTALLATION TEST WORKS NORMAL. ZONE TEMP CONTROLLERS BITE TESTED GOOD.