Service difficulty report · Switch · Gulstm 112

Difficulty date
February 4, 2000
Submitted
April 17, 2000
Operation
General aviation
Aircraft
N76QR
Make and model
Gulstm 112
Aircraft serial
232
Part
Switch
Part number
1SE13
Condition
Failed
Location
Nlg
Component
Actuator · Gerdes
Component part number
488051
Stage of operation
NR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

PILOT REPORTED NLG DOWN LIGHT INTERMITTENT. INVEST SHOWED HYD ACTUATED NLG DOWN SWITCH ROLLER PN 1JE5 HANGING UP AT BOTTOM OF HOLE AT DNLK ASSY. RE-RIGGED SWITCH. WHILE TESTING NLG ACT PN 48805-1 LEAKED. RESEALED ACT. WHILE TESTING HYD POWER PACK PN 795000-1 FAILED. AFTER O/H OF POWER PACK NLG DOWN LIGHT STILL WOULD NOT ILLUMINATE. FND NLG HYD DOWN SWITCH PN 1SE1-3 WITH HIGH RESISTANCE ON CONTACT THAT OPERATES HYD POWER PACK TO SHUT DOWN WITH ACT APROX .1250 INCH FROM COMPLETE EXTENSION OF NLG. REPLACED SWITCH. SYS OPERATED NORMALLY EXCEPT AT EMERG EXT, NLG LIGHT FAILED. SHORTED ACT ROD END 1/2 TURN. SYS OPERATES NORMALLY. (X)