SDR ASAA2019042629133

Service difficulty report · Fault Code · Boeing 737990ER

Difficulty date: April 22, 2019
Submitted: April 26, 2019
Operation: Air carrier
Aircraft: N409AS
Make and model: Boeing 737990ER
Aircraft serial: 41733
Aircraft time: 24,857 hours, 8,147 cycles
Engine: Cfmint CFM567B27E
System (JASC): 7830 · Engine Thrust Reverser
Part: Fault Code
Condition: False Activation
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 T/C 78273000 FOUND FAULT CODE 73-21271 #1 ENG. ALT VOLTAGE TO EEC OUT OF RANGE. GROUNDED - YES. ACCOMPLISHED #1 EEC BITE, NO FAULTS LOGGED IN RECENT 0-3 AND FAULT HISTORY LEGS 0-10. ACCOMPLISHED #1 EEC TEST REF B737-900 AMM 73-21-00, TEST PASSED.