19950530048329A

Accident · Substantial damage

FAA accident report · Bell 47G-5 · Rachel, TX · May 30, 1995

Date: May 30, 1995 · 14:10 local
Place: Rachel, TX
Operating rules: General operating rules (Part 91)
Damage: Substantial damage
Aircraft: N1502L
NTSB investigation: NTSBFTW95LA239
Reported as: Bell 47G5

N1502LRegistration cancelled Jun 21, 2017 · Bell 47G-5S/N 7945 · Built 1964 Airframe modelBell 47G-5 Engine modelLycoming VO-435 seriesReciprocating

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

Tail rotor drive assemblequill shaft gear and bearing failed. Possible cloged oil passage from gear box to drive assembly caused by material worn off the quill shaft gear. (3) possible unapproved bearing installed.

As the FAA filed it

TAIL ROTOR DRIVE ASSEMBLEQUILL SHAFT GEAR AND BEARING FAILED. POSSIBLE CLOGED OIL PASSAGE FROM GEAR BOX TO DRIVE ASSEMBLY CAUSED BY MATERIAL WORN OFF THE QUILL SHAFT GEAR. (3) POSSIBLE UNAPPROVED BEARING INSTALLED.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

NTSB FTW95LA239Accident · No injuriesLimited investigationFinal reportFalfurrias, TXInadvertent installation of an unapproved part (tail rotor gear/drive assembly), that became excessively worn since it did not conform to the manufacturer's specification, resulting in failure of the associated tail rotor bearing (also an unapproved part),…May 30, 1995 · Substantial damage