# NTSB FTW75DPJ07: Amer Avco AA5, N9599L, Yukon, OK, September 30, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 30, 1974
- Place: Yukon, OK · YUKON, OK
- Location: 35.5184° N, 97.7662° W: Placed by OpenAirDocs: center of Yukon, OK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.5184&lon=-97.7662&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 8, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 141139
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW75DPJ07
- Page: https://openairdocs.org/ntsb/FTW75DPJ07

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3062  74/9/30    YUKON,OKLA          AMER AVCO AA5       CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1500                    N9599L              PX-  0  0  0  DUAL                      AGE 22, 307 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            40 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - CIMARRON
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          OKLAHOMA CITY,OKLA          RETURN                       YUKON,OKLA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           GEAR COLLAPSED                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           POWERPLANT - POWERPLANT-INSTRUMENTS: FUEL QUANTITY GAUGE
           MISCELLANEOUS ACTS,CONDITIONS - ERRATIC
           MISCELLANEOUS ACTS,CONDITIONS - FUEL STARVATION
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - TOUCH AND GO LANDING
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
           DUAL STUDENT - LACK OF FAMILIARITY WITH AIRCRAFT
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- SELECTOR ON R TANK.AFTR ACDT,TANK EMPTY,GAGE READ 3/4 FULL.INSTR DIDN'T PRE-FLT FUEL SYS.
```

## Aircraft

- Registration: [N9599L](https://openairdocs.org/deregistered/N9599L-2013-05-23), registration cancelled 2013-05-23, S/N AA5-0599, built 1974 (OpenAirDocs)
- Reported make and model: AMER AVCO AA5
- Registry model: [Grumman American Avn. AA-5](https://openairdocs.org/model/grumman-american-avn-aa-5) (registry code 3960104) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Cimarron

## 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 19740930033589A](https://openairdocs.org/incident/19740930033589A), Sep 30, 1974: Grumav AA5, Yukon, OK, Substantial damage. Selector on r tank. Aftr acdt,tank empty,gage read 3/4 full. Instr didn't pre-flt fuel sys.

## Other investigations on N9599L (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 BFO91LA070](https://openairdocs.org/ntsb/BFO91LA070), Jul 20, 1991: Grumman AA5 (N9599L), Oakland, MD, destroyed. Probable cause: THE PILOT'S FAILURE TO MAINTAIN ADEQUATE AIRSPEED WHICH RESULTED IN AN INADVERTENT STALL.

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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