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SDR ASAA2019011227801

Open the Markdown

Service difficulty report · Not Reported · Boeing 737890

FAA SDR system

Difficulty date
January 12, 2019
Submitted
February 22, 2019
Operation
Air carrier
Aircraft
N590AS
Make and model
Boeing 737890
Aircraft serial
35687
Aircraft time
41,878 hours, 12,648 cycles
System (JASC)
7530 · Compressor Bleed Control
Part
Not Reported
Condition
Malfunctioned
Location
Nr 1 Engine
Stage of operation
IN
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

WHILE PERFORMING TASK CARD, FOUND NR 1 ENGINE FAULT 75-20391, LONG TIME FAULT. THE VSV POSITION SIGNAL IS OUT OF RANGE. GROUNDED - YES. APPLIED LONG TIME FAULT DEFERRAL 450 FLT HRS. MSG 75-20391 ON NR 1 ENGINE DEFERRED PER T/C 78273000. FAULT CODE 75-20391 ON ENG NR 1 WAS LOGGED 7TH FLIGHT LEG AGO. ACCOMPLISHED EEC BITE TEST PROCEDURES, NO FAULTS, OPS NML REF FIM 73-00 TASK 801. ACCOMPLISHED CONFIRMATION TEST, TEST 12 ACTUATOR TEST, NO FAULTS, OPS NML REF AMM 71-00-00-700-807-F00. THIS CLEARS PLT. GROUND VERIFICATION SUCCESSFUL.