DFW06CA081

NTSB accident investigation · Grumman-Schweizer G-164B · Texarkana, AR · March 4, 2006

Accident · Minor injuriesData collectionFinal report
Date
March 4, 2006, 06:30 local (12:30 UTC)
Place
Texarkana, AR
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N6641QGrumman-Schweizer G-164B
Weather
Visual (VMC) · Day
Status
Completed · report May 30, 2006
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20060304003039A
Case key
63320

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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Probable cause

The loss of engine power due to a cracked cylinder. Contributing factors were the pilot's failure to maintain adequate airspeed.

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 powerClimb
Engine assembly,cylinder - crackedCause
Loss of control - in flightDescent - uncontrolled
Airspeed - not maintainedPilot in commandFactor
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - muddy

Analysis

The 828-hour commercial pilot of the single-engine agricultural application airplane, took off from a 3,500-feet long by 100-feet wide private grass strip on a northerly heading. During climb-out, as the pilot initiated a turn to the east, the engine began to vibrate and run rough, and subsequently lost power. The pilot reported that he activated the dump valve to release the insecticide payload in order to lighten its weight. The pilot then stated that the airplane "rolled to the left past 80-degrees. " The airplane impacted muddy terrain in a near vertical attitude. The airplane was equipped with a 5-point restraint system that held the pilot in place. Examination of the radial engine by the operator revealed the number three cylinder was cracked.

Factual narrative

The 828-hour commercial pilot of the single-engine agricultural application airplane, took off from a 3,500-feet long by 100-feet wide private grass strip on a northerly heading. During climb-out, as the pilot initiated a turn to the east, the engine began to vibrate and run rough, and subsequently lost power. The pilot reported that he activated the dump valve to released the insecticide payload in order to lighten its weight. The pilot then stated the airplane "rolled to the left past 80-degrees. " The airplane impacted muddy terrain in a near vertical attitude. The airplane was equipped with a 5-point restrain system that held the pilot in place. Examination of the radial engine by the operator revealed the number three cylinder was cracked.

Aircraft

Registration
N6641Q
Reported as
Grumman-Schweizer G-164B
Category
Airplane
Serial number
171B
Airframe hours
9,445
Engine
Pratt & Whitney R1340, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Ark Tex Avation, Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · October 1, 2005
Departed
Texarkana, AR

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
28
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, With waivers/limitations
Last flight review
April 1, 2004
Seat
Single
Flight hours
828 total · 600 in this make and model · 828 as pilot in command · 25 in the last 90 days · 25 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
80° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
59 °F, dew point 30 °F
Altimeter
30.23 inHg
Observed at
TXK, 15 nm away

FAA reports on this event · 1

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