# NTSB IAD79DA079: Grumman AA1C, N31NA, Mt Airy, MD, September 13, 1979

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 13, 1979
- Place: Mt Airy, MD · MT AIRY, MD
- Location: 39.3747° N, 77.1538° W: Placed by OpenAirDocs: center of Mount Airy, MD, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.3747&lon=-77.1538&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 13, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 133547
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD79DA079
- Page: https://openairdocs.org/ntsb/IAD79DA079

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2653  79/9/13    MT AIRY,MD          GRUMMAN AA1C        CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1600                    N31NA               PX-  0  0  0  DUAL                      AGE 59, 8624 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            557 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BALTIMORE, MD               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: CROP                                      IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED ALTITUDE AND CLEARANCE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SIMULATED CONDITIONS
        REMARKS- INST PILOT DEMO EMERGENCY LAND OPEN FIELD.
```

## Aircraft

- Registration: [N31NA](https://openairdocs.org/deregistered/N31NA-1980-04-09), registration cancelled 1980-04-09, S/N AA1C-0208 (OpenAirDocs)
- Reported make and model: GRUMMAN AA1C
- Registry model: [Grumman American Avn. AA-1C](https://openairdocs.org/model/grumman-american-avn-aa-1c) (registry code 3960100) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

## 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 19790913030589A](https://openairdocs.org/incident/19790913030589A), Sep 13, 1979: Gulstm AA1C, Mt Airy, MD, Substantial damage. CFI let acft descend to unsafe altitude on practice forced landing. Unable to clear obstacles. Psbl engine defect

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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