Grumman Acft Eng Cor-Schweizer G-164B N6607Q

Summary

On 19 August 2010 at about 19:00 local time, a Grumman Acft Eng Cor-Schweizer G-164B registered N6607Q, operated by Crawford Aviation Services, was involved in an accident near Buckeye, Arizona, United States. One person was on board and one was seriously injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

19 August 2010 at 19:00

Classification

Accident

Location

Buckeye, Arizona, United States

Coordinates

33.2817, -112.5044

Aircraft

Grumman Acft Eng Cor-Schweizer G-164B

Registration

N6607Q

Category

Airplane

Engines

1

Operator

Crawford Aviation Services

Operating rule

Part 137: Agricultural

Purpose of flight

Aerial Application

Phase of flight

Not recorded

Route

Buckeye → Buckeye

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

WPR10LA413

1 person was seriously injured.

An increase in engine rpm and vibration, which resulted in an aborted takeoff and runway excursion. The reason for the increased engine rpm and vibration could not be determined because of postaccident fire damage.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The pilot had flown the airplane about 4.2 hours on the date of the accident with no discrepancies noted. During the accident takeoff, the pilot noted normal acceleration, engine indications, and tail liftoff. After completing 2/3 of the takeoff roll, the engine rpm increased to 2,600-2,700 (the maximum allowable is 2,550 rpm). The pilot felt a moderate-to-severe vibration and immediately initiated procedures for an aborted takeoff. He retarded the throttle to idle, applied maximum braking, and held the control stick full aft. As the airplane slowed to 20-30 knots, he steered the airplane away from a fence at the end of the runway onto hard packed desert terrain. After rolling a short distance, the left main landing gear encountered a depression in the terrain and sheared off. The airplane settled onto the left wing and was almost immediately engulfed in fire. Fire consumed the cabin and inboard wing areas, as well as the aft section of the engine, which exposed the gears in the accessory section. Fire consumed all accessories, including both magnetos. A postaccident examination of the engine could not determine a reason for the increase in rpm and vibration due to fire damage.

Quoted verbatim from the NTSB record.