- Date
- November 11, 2007, 12:30 local (19:30 UTC)
- Place
- Benson, AZ
- Injuries
- 4 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N9592UGrumman American AA-5A
- Weather
- Visual (VMC) · Day
- Status
- Completed · report August 28, 2008
- Report
- Approved by Office Director
- Parties
- Federal Aviation Administration
- FAA report
- 20071111831449A
- Case key
- 67421
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The pilot's inadequate compensation for wind conditions, and his failure to maintain sufficient airspeed to avoid a stall. Contributing to the accident was a variable tailwind.
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.
Analysis
The pilot flew over the airport to check the wind, and determined the wind was out of the west. He flew a traffic pattern for runway 28. On final approach, he extended full flaps, and said he established an airspeed of 75 mph. Approximately 20 feet above the runway, the stall horn came on, and the airspeed had dropped to 60 mph. He added power, but the airplane drifted to the left, and landed off the runway in rough terrain. The pilot said the landing was hard, and the airplane bounced and skidded to a stop. The airplane's nose and left main landing gear were separated from the fuselage, and the surfaces of both wings were wrinkled. A witness at the airport said that the airplane's final approach to runway 28 was unusually low, flat and very fast. Additionally, he said the wind appeared to be from 140 to 150 degrees at approximately 8 knots and gusting to 13 knots. The pilot said that after he got out of the airplane he noticed that the wind was from the east, and a short time later the windsock had shifted back to a westerly direction again.
Factual narrative
On November 11, 2007, approximately 1230 mountain standard time, a Grumman American AA-5A, N9592U, was substantially damaged when it landed hard and impacted irregular terrain at Benson Municipal Airport (E95), Benson, Arizona. The private pilot and his three passengers were not injured. Valley Aircraft Restoration Society was operating the airplane under Title 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed for the personal, cross-country flight, which originated from Chandler, Arizona, about 1 hour 20 minutes before the accident. No flight plan had been filed.
The pilot said that he flew over the runway to check the wind conditions by looking at the windsock. It appeared to him that the wind was out of the west, and he decided to land on runway 28. On final approach, he extended full flaps and noted that the airspeed was at 75 miles per hour. Approximately 20 feet above the runway, the stall horn came on and the airspeed had dropped to 60 miles per hour. He added power, but the airplane drifted to the left and landed off the runway in rough terrain. The pilot said the landing was hard, and the airplane bounced and skidded to a stop. The airplane's nose and left main landing gear were separated from the fuselage and the surfaces of both wings were wrinkled.
A witness at the airport said that the airplane's final approach to runway 28 was unusually low, flat and very fast. Additionally, he said the wind appeared to be from 140 to 150 degrees at approximately 8 knots and gusting to 13 knots. The pilot said that after he got out of the airplane he noticed that the wind was from the east and a short time later the windsock had shifted back to a westerly direction again.
Aircraft
- Registration
- N9592U
- Reported as
- Grumman American AA-5A
- Category
- Airplane
- Serial number
- AA5A-0092
- Airframe hours
- 1,737
- Engine
- Lycoming O-320-E2G, 150 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Valley Aircraft Restoration Society
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · November 1, 2007 · 2 hours before
- Departed
- FFZ · Mesa, AZ
- Destination
- E95 · Benson, AZ
- Airport
- E95 · Benson Municipal Airport, runway 28, 4,000 × 75 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
- 44
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, With waivers/limitations
- Last flight review
- December 1, 2005
- Seat
- Left
- Flight hours
- 127 total · 35 in this make and model · 53 as pilot in command · 2 in the last 90 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 240° at 6 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 72 °F, dew point 32 °F
- Altimeter
- 29.79 inHg
- Observed at
- FHU, 24 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.