Service difficulty report · Safety Switch · Beech 1900D

Difficulty date
May 10, 2010
Submitted
May 11, 2010
Operation
Air carrier
Aircraft
N69547
Make and model
Beech 1900D
Aircraft serial
UE189
Aircraft time
28,621 hours, 34,938 cycles
Engine
Pwa PT6A67D
Part
Safety Switch
Condition
Out Of Adjust
Location
Mlg
Stage of operation
CR
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

DURING FLIGHT, WITH FLAPS UP POWER AT 88 PERCENT N1 GEAR WARNING HORN SOMETIMES UNABLE TO CANCEL. WITH FLAPS 17 DEGREES, WERE ABLE TO CANCEL HORN. FLAPS 35 DEGREES TESTED FINE UNABLE TO CANCEL. GEAR WARNING HORN GOES OFF AT 88 PERCENT N1 ON THE LT AND RT THERE WAS AN INTERMITTENT CHIRP OF THE HORN AT 96.4 N1 AND 94.8 N1. REPLACED PUSH TO SILENCE SWITCH AND ADJUSTED RT MLG SAFETY SQUAT SWITCH, OPS CHECK NORMAL. TEST FLIGHT SATISFACTORY.

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