Service difficulty report · Warning System · Boeing 747422

Difficulty date
January 29, 2015
Submitted
January 30, 2015
Operation
Air carrier
Aircraft
N177UA
Make and model
Boeing 747422
Aircraft serial
24384
Aircraft time
10,011 hours, 11,985 cycles
Engine
Pwa PW4056
Part
Warning System
Condition
False Activation
Location
Cockpit
Stage of operation
TO
How discovered
O
Nature of condition
N
Precautionary procedure
C

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

LOW SPEED AT 20 KNTS FOR FLAP CONFIG WARNING. LT OTBD TE FLAP INDICATED 22.4 PERCENT WITH FLAPS 20 SELECTED. CLEANED TE FLAP POS TRANSMITTER CONNECTOR. FOLLOW AMM 27-58-01 P501 FOR FLAP TRANSMITTER IND CHECK ALLOWED TO HAVE FLAP IND AT 20 UNITS 18.11 - 22.28, WITHIN LIMITS OF MM 27-58-01 503. REPLACED TRANSMITTER PRECAUTION.