# NTSB MKC82DA038: Grumman AA-5A, N9958U, Monona, IA, February 21, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: February 21, 1982, 16:00 local (22:00 UTC)
- Place: Monona, IA
- Coordinates: 43.050483, -91.389503 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.0505&lon=-91.3895&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report February 21, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71748
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC82DA038
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71748/pdf
- Page: https://openairdocs.org/ntsb/MKC82DA038

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Overrun, takeoff
  - airport facilities,runway/landing area condition - wet (contributing factor)
  - airport facilities,runway/landing area condition - soft (contributing factor)
  - lift-off - premature, pilot in command (cause)
  - aborted takeoff - delayed, pilot in command (cause)
- On ground/water encounter with terrain/water, takeoff
  - terrain condition - ditch (contributing factor)
- Complete gear collapsed, takeoff
  - landing gear,main gear - overload
  - landing gear,nose gear - overload

## Analysis

THE PILOT TAXIED TO THE SOUTH END OF THE RUNWAY TO DEPART WITH THREE PASSENGERS. HE BEGAN A SOFT FIELD TAKEOFF ROLL ON A SOFT, WET RUNWAY WITH 10 DEGREES OF FLAPS. THE NOSE WHEEL WAS LIFTED OFF EARLY. IT WAS HELD OFF AS THE PLANE ACCELERATED. THE PILOT REPORTED REACHING AN AIRSPEED THAT WAS NOT HIGH ENOUGH. THE PLANE LIFTED OFF, BUT SETTLED BACK TO THE GROUND. THE PILOT INITIATED AN ABORT BY REDUCING THE POWER TO IDLE AND APPLYING BRAKES. THE PLANE RAN OFF THE END OF THE RUNWAY, WENT THROUGH A DITCH, AND CAME TO REST ON A ROAD. THE NOSE AND RIGHT MAIN GEAR SEPARATED. THE PROPELLER, LOWER COWLING, AND RIGHT WING WERE DAMAGED.

## Aircraft

- Registration: [N9958U](https://openairdocs.org/deregistered/N9958U-1989-08-03), registration cancelled 1989-08-03, S/N AA5A0358 (OpenAirDocs)
- Reported make and model: GRUMMAN AA-5A
- Registry model: [Grumman American Avn. AA-5A](https://openairdocs.org/model/grumman-american-avn-aa-5a) (registry code 3960106) (OpenAirDocs)
- Category: Airplane
- Serial number: AA5A0358
- Airframe hours: 1129
- Engines: LYCOMING O-320-E2G 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Wings Over Iowa
- Registered owner: First Leasing Company
- Departed: 7C3, MONONA, IA
- Destination: WINONA, MN
- Airport: 7C3, Monona Municipal, runway 36, 3,000 × 120 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 20; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 92 total, 7 in this make and model, 51 as pilot in command, 14 in the last 90 days, 7 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 5 knots
- Visibility: 6 statute miles
- Temperature: 95 °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 (OpenAirDocs).

- [Accident 19820221012879A](https://openairdocs.org/incident/19820221012879A), Feb 21, 1982: Grumav AA5A, Monona, IA, Substantial damage. Unable to climb after liftoff. Aborted late. Ran off end into a ditch.

## Other investigations on N9958U (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CHI88FA067](https://openairdocs.org/ntsb/CHI88FA067), Feb 23, 1988: Grumman American AA-5A (N9958U), Martinsville, IN, destroyed, 2 fatal. Probable cause: PILOT TO TAKE INTO CAONSIDERATION THE WIND DIRECTION AND VELOCITY BEFORE SELECTING HIS TAKEOFF DIRECTION.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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