Schweizer 269D Configuration A (Schweizer 333), G-TAMA, 4 February 2008

From:
Air Accidents Investigation Branch
Published
10 December 2014
Category:
General aviation - rotorcraft
Report type:
Bulletin - Field investigation
Date of occurrence:
4 February 2008
Aircraft type:
Schweizer 269D Configuration A (Schweizer 333)
Location:
Sheffield City Airport
Registration:
G-TAMA

Schweizer 269D Configuration A (Schweizer 333), G-TAMA

Summary:

After landing on a post-maintenance flight, the helicopter suffered a seizure of the main rotor gearbox pinion outer bearing due to oil starvation. The main rotor gearbox had been replaced during the recent maintenance. It was determined that maintenance personnel had inadvertently caused metallic debris to enter the bearing oil supply gallery during their attempts to remove a blanking plug from the gearbox low oil pressure switch port, which had been overtightened.

Download report:

Schweizer 269D Configuration A (Schweizer 333) G-TAMA, 08-08.pdf (498.22 kb)

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Published 10 December 2014
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