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ASN Wikibase Occurrence # 248624
Last updated: 22 September 2021
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Date:26-APR-1982
Time:15:45
Type:Silhouette image of generic AS50 model; specific model in this crash may look slightly different
Aérospatiale AS 350D Astar
Owner/operator:Air-Op, Inc.
Registration: N5784Y
MSN: 1424
Fatalities:Fatalities: 0 / Occupants:
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:Houston, TX -   United States of America
Phase: Landing
Nature:Training
Departure airport:Houston, TX
Destination airport:Houston, TX
Investigating agency: NTSB
Narrative:
The purpose of the flight was for the pilot to practice maneuvers in preparation for a Part 135 check ride. The pilot was practicing power recovery autorotations to a height of about 5 ft ag. He reported that on his fourth autorotation, the engine did not accelerate when he attempted the power recovery. Subsequently, the helicopter fell through the recovery and landed hard.
During the investigation, the engine fuel control and power turbine governor were removed for examination. The governor was found to be within specifications. However, an examination of the fuel control unit revealed the px trim bleed part was oversize. The specification called for a size #64 to #68 part, but a #61 part was installed. Also, there was some wear on the bellows. According to Bendix Corp, the oversize part and wear would have leaned the mixture, but would not have caused the power loss.

Sources:

NTSB FTW82DA150

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7 Mar 2021 F-GIBM Dolijet 2 Touques, Calvados, Normandy w/o


Revision history:

Date/timeContributorUpdates
07-Mar-2021 19:34 harro Added

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