Service difficulty report · Servo · Boeing 737890

Difficulty date
June 8, 2008
Submitted
July 1, 2008
Operation
Air carrier
Aircraft
N579AS
Make and model
Boeing 737890
Aircraft serial
35187
Aircraft time
5,092 hours, 1,537 cycles
Part
Servo
Part number
305RAA1
Part serial
AS04696
Condition
Faulted
Location
Autothrottles
Part time
5,092 hours, 1,537 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

AT 360 CLIMBING 380 AND 380 CLIMBING 400 IN VERT SPEED (500 800FM) AUTO THROTTLES WOULD NOT FOLLOW THE N1 CHEVRON (GREEN) ON N1 GAGE. (OAT 58C TAS 444 KT AT 400) USING VNAV AUTOTHROTTLES FUNCTION CORRECTLY PERFORMED FIM TASK 22 31 00 710 801 AND 22 31 00 710 802 ON AUTOTHROTTLES AND PERFORMED LAND. VERIFY TEST PER MM 22 11 00. OPS CHECK NORMAL. NO FAULTS LOGGED ON FFR. OK FOR CONTINUE SERVICE.