FTW99LA134

NTSB accident investigation · Grumman-Schweizer G164-B · Garwood, TX · May 8, 1999

Accident · No injuriesLimited investigationFinal report
Date
May 8, 1999, 16:45 local (21:45 UTC)
Place
Garwood, TX
Injuries
1 uninjured
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N6771KGrumman-Schweizer G164-B
Weather
Visual (VMC) · Day
Status
Completed · report September 7, 2000
Report
Approved by Office Director
FAA report
19990508004809A
Case key
46254

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 pilot's failure to maintain adequate airspeed which resulted in an inadvertent stall. A related factor was the high density altitude.

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 control - in flightTakeoff - initial climb
Weather condition - high density altitudeFactor
Airspeed - inadequatePilot in commandCause
Stall - inadvertentPilot in commandCause
In flight collision with objectDescent - uncontrolled
Object - wire,transmission

Analysis

During the takeoff initial climb, the pilot turned the airplane (airspeed 30-40 knots) and the airplane 'cleared a 25 foot power line, stalled, and fell into a rice field.' The agricultural aircraft was loaded with 1,400 pounds of corn seed prior to the departure on the west runway (3,300 feet long; 2,500 feet usable). The airplane was destroyed by a post impact fire. Throughout the area winds were from the east southeast at 4-10 knots with the temperature from 88-91 degrees Fahrenheit. Density altitude was calculated at 2,546 feet.

Factual narrative

On May 8, 1999, at 1645 central daylight time, a Grumman-Schweizer G164-B, agricultural aircraft, N6771K, impacted a rice field during the takeoff initial climb near Garwood, Texas. The airplane, owned and operated by Aero Ag Services, Garwood, Texas, was operated under 14 Code of Federal Regulations (CFR) Part 137. The airplane was destroyed by a post-impact fire. The commercial pilot, sole occupant, was not injured. Visual meteorological conditions prevailed for the local aerial application flight and a flight plan was not filed. The flight was originating at the time of the accident.

During interviews, conducted by the NTSB investigator-in-charge (IIC), and on the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2), the pilot reported that the airplane's hopper was loaded with 1,400 pounds of corn seed. The wind had been light and variable (2 to 5 knots) generally from the south, with the temperature in the low 90's. The departure was made on the west runway (3,000 feet long; 2,500 feet usable). As the pilot turned the airplane (airspeed 30-40 knots) to the south, he noticed there was no wind. The airplane "cleared a 25 foot power line, stalled, and fell into a rice field." Within 4 or 5 minutes, after the pilot exited, the airplane was engulfed in flames.

The National Weather Service (NWS) surface observation for Sugarland (39 miles northeast of Garwood) reported the winds from 090 degrees at 4 knots, temperature 91 degrees Fahrenheit, and the altimeter 29.89 inches. The NWS surface observation for Victoria (45 miles southwest of Garwood) reported the winds from 150 degrees at 10 knots, temperature 88 degrees Fahrenheit, and the altimeter 29.88 inches. The IIC calculated the density altitude at 2,546 feet.

Aircraft

Registration
N6771K
Reported as
Grumman-Schweizer G164-B
Category
Airplane
Serial number
460B
Airframe hours
10,000
Engine
Garrett TPE-331-25AA, 575 horsepower, turbo prop
Damage
Destroyed
Fire
On-Ground
Flight
Aerial application · Part 137
Registered owner
Aero Ag Services
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · April 22, 1999 · 80 hours before
Airport
NONE · Aero-Ag Services, Inc, runway 27, 3,000 × 200 ft, grass/turf

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
47
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
5,000 total · 2,500 in this make and model · 300 in the last 90 days · 150 in the last 30 days · 8 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
91 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

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