# NTSB NYC78FGM10: Grum Amer AA-5A, N9993U, Seven Springs, PA, November 20, 1977

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: November 20, 1977
- Place: Seven Springs, PA · SEVEN SPRINGS, PA
- Location: 40.0263° N, 79.2943° W: Placed by OpenAirDocs: center of Seven Springs, PA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.0263&lon=-79.2943&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 2 minor
- Status: Completed, report December 21, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 144620
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC78FGM10
- Page: https://openairdocs.org/ntsb/NYC78FGM10

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3485  77/11/20   SEVEN SPRINGS,PA    GRUM AMER AA-5A     CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 25, 75 TOTAL
        TIME - 1300                    N9993U              PX-  0  1  1  PLEASURE/PERSONAL TRANSP  HOURS, 5 IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - SEVEN SPRINGS
        DEPARTURE POINT             INTENDED DESTINATION
          ALLEGHENY COUNTY,PA         SEVEN SPRINGS,PA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           UNDERSHOOT                                               LANDING: FINAL APPROACH
           COLLIDED WITH: TREES                                     LANDING: GO-AROUND
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE AND ALTITUDE
           PILOT IN COMMAND - DELAYED IN INITIATING GO-AROUND
        FACTOR(S)
           WEATHER - DOWNDRAFT,UPDRAFTS
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          SCATTERED                                                UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  WIND DIRECTION-DEGREES
          NONE                                                     130
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           30                                                      VFR
        TYPE OF FLIGHT PLAN
          NONE
        REMARKS- AIRMET WARNED OF TURBC & 30KT WINDS BELOW 2000FT AGL.
```

## Aircraft

- Registration: [N9993U](https://openairdocs.org/deregistered/N9993U-2019-07-11), registration cancelled 2019-07-11, S/N AA5A0393 (OpenAirDocs)
- Reported make and model: GRUM AMER AA-5A
- Registry model: [Grumman American Avn. AA-5A](https://openairdocs.org/model/grumman-american-avn-aa-5a) (registry code 3960106) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Seven Springs

## 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 19771120035559A](https://openairdocs.org/incident/19771120035559A), Nov 20, 1977: Grumav AA5A, Seven Springs, PA, Substantial damage. AIRMET warned of turbc & 30KT winds below 2000FT AGL.

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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