SDR 2003FA0001125

Service difficulty report · Screw · Naval N3N3

Difficulty date: October 23, 2003
Submitted: November 5, 2003
Operation: General aviation
Aircraft: N44848
Make and model: Naval N3N3
Aircraft serial: 4477
Engine: Lyc R6809
System (JASC): 8520 · Reciprocating Engine Power Section
Part: Screw
Part number: 559E
Condition: Loose
Location: Master Rod
Part time: 2,623 hours
Stage of operation: NR
How discovered: 9
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

SB NR 126, 4/1/46, HAD NOT BEEN COMPLIED WITH. KNUCKLE PINS HAD BACKED OUT OF THE MASTER ROD AND HAD BEEN MACHING INTO THE CRANKSHAFT. ENGINE WAS BEING REPAIRED FOR OTHER ISSUES WHEN THIS WAS DISCOVERED. FAILURE WAS IMMINENT. (SW15200402815)(K)

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