SDR 99ZZZX72

Service difficulty report · Bumper · Cessna 172RG

Difficulty date
November 3, 1998
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N172RG
Make and model
Cessna 172RG
Aircraft serial
172RG0083
Part
Bumper
Part number
22130117
Condition
Worn
Location
Nlg Ww
Part time
5,105 hours
Stage of operation
NR
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

NOSE GEAR WOULD NOT EXTEND CAUSING A LANDING WITHOUT THE NOSE GEAR DEPLOYED, CAUSING DAMAGE TO THE PROPELLER AND NOSE SECTION. THE NOSE GEAR BUMPER AT THE TOP OF THE WHEELWELL WHICH DETERMINES THE NOSE GEAR RETRACTION HEIGHT WAS WORN OUT. THIS ALLOWS THE NOSE GEAR TO RETRACT HIGHER THAN NORMAL. SINCE THE NOSE GEAR DOORS ARE CLOSED BY THE NOSE GEAR PULLING ON A MECHANICAL STRIKER BAR, THE DOORS CLOSE TIGHTER AS THE BUMPER WEARS. THE DOORS WERE FINALLY PULLED INTO THE WHEELWELL CATCHING THEIR OUTER EDGE JAMMING THE GEAR IN THE UP POSITION. CESSNA'S ROUTINE MAINTENANCE REQUIRES INSPECTION AND ADJUSTMENT OF THE NOSE GEAR RETRACTION HEIGHT.

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