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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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NTSB Report

March 6, 1997 · Grumman G-164 · N527Y

Newkirk, OK

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
March 6, 1997
Injury Outcomes
No injuries (1 uninjured)
Location
Newkirk, OK
Aircraft
Grumman G-164
Tail Number
N527Y
Operator
Green S Ag Sprayers
Injuries
None
Aircraft Damage
Substantial
NTSB Number
FTW97LA117

The agricultural airplane was applying fertilizer to a field when the engine began to lose power. The pilot selected an open meadow in which to make an emergency landing. On approach to the meadow, he maneuvered over a set of power lines and lost 'most of [his] flying airspeed.' The airplane landed hard in the meadow, the landing gear collapsed, and the airplane nosed over. Examination of the engine by the operator revealed that the blower (integral supercharger) had failed.

NTSB Probable Cause

The partial loss of engine power due to failure of the blower (integral supercharger). A factor was the power line over which the pilot had to maneuver during the forced landing which resulted in insufficient airspeed to flare the airplane.

Full Narrative

On March 6, 1997, at 0945 central standard time, a Grumman G-164, N527Y, registered to Adventure Leasing LLC and operated by Green's Ag Sprayers under Title 14 CFR Part 137, was substantially damaged during a forced landing following a loss of engine power near Newkirk, Oklahoma. The commercial pilot, sole occupant of the airplane, was not injured. Visual meteorological conditions prevailed and a flight plan was not filed for the local aerial application flight that originated from a private airport 10 minutes before the accident. On the NTSB Pilot/Operator Aircraft Accident Report, the pilot reported that he was making his first pass to apply fertilizer to a field when the airplane's engine "began to lose power." He then "pushed all power levers to full power which resulted in a severe vibration." The engine continued to lose power, and the pilot selected "an open meadow" in which to make an emergency landing. On approach to the meadow, the pilot "had to get the plane over a set of power lines which resulted in the loss of "most of [his] flying airspeed." The airplane "landed hard on its gear which collapsed them causing damage to the underside and engine resulting in the plane flipping over." During a telephone interview conducted by the NTSB investigator-in-charge, the operator reported that examination of the engine revealed that the blower (integral supercharger) had failed.

Flight

Event TypeAccident
Event Time09:45 CST
Nearest Airport0nm
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftGrumman G-164
Tail NumberN527Y
Aircraft CategoryAir
DamageSubstantial
OperatorGreen S Ag Sprayers
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsP&W · R-985-14B · Reciprocating · 450
Seats1

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 31 · Second Class

Conditions

ConditionsVMC
LightDaylight
Wind220° @ 7 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point50 / 30 C
Altimeter30.00 inHg
Weather SourcePILO

Appendix: Source Data