SEA85LA146

NTSB accident investigation · Grumman 164B · Twin Falls, ID · June 22, 1985

Accident · No injuriesLimited investigationFinal report
Date
June 21, 1985, 19:30 local (Jun 22, 1985, 01:30 UTC)
Place
Twin Falls, ID
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N6762KGrumman 164B
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19850622027149A
Case key
40183

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerManeuvering - aerial application
Engine assembly,cylinder - crackedCause
Main gear collapsedManeuvering
Nose overLanding - flare/touchdown

Analysis

A partial loss of power occurred during aerial application due to a crack around one of the cylinders. While the plt was attempting to dump chemicals, the acft settled onto the ground tearing off the rt main gear. The plt then flew on to Twin Falls to land. The acft flipped inverted during the landing.

Aircraft

Registration
N6762K
Reported as
Grumman 164B
Category
Airplane
Serial number
456B
Engine
P&W R-1340-AN1, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Ken Spray, Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · May 13, 1985 · 96 hours before
Departed
TWF · Twin Falls, ID
Airport
TWF · Twin Falls, runway 12, 3,207 × 100 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
56
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land, Single-engine sea
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
11,850 total · 4,000 in this make and model · 11,850 as pilot in command · 170 in the last 90 days · 12 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
50 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 28 °F
Observed at
1

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.