# NTSB DEN71FXD36: Amer Avco AA-1, N5607L, Longmont, CO, November 6, 1970

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: November 6, 1970
- Place: Longmont, CO · LONGMONT, CO
- Location: 40.1682° N, 105.1005° W: Placed by OpenAirDocs: center of Longmont, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.1682&lon=-105.1005&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured
- Status: Completed, report August 31, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 158872
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN71FXD36
- Page: https://openairdocs.org/ntsb/DEN71FXD36

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4266   70/11/6   LONGMONT,COLO       AMER AVCO AA-1      CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 0725                    N5607L              PX-  0  0  0  DUAL                      AGE 33, 459 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            21 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - LONGMONT MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          BOULDER,COLO                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
           COLLISION WITH GROUND/WATER: CONTROLLED                  LANDING: OTHER
        PROBABLE CAUSE(S)
           DUAL STUDENT - IMPROPER LEVEL OFF
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
           MISCELLANEOUS ACTS,CONDITIONS - PREVIOUS DAMAGE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - TOUCH AND GO LANDING
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- 7 GOUGES,APRX 18IN APART,FOUND ON RWY.CRASHED LNDD IN PASTURE,ENG WOULD NOT DEVELOP PWR.
```

## Aircraft

- Registration: [N5607L](https://openairdocs.org/deregistered/N5607L-2013-01-31), registration cancelled 2013-01-31, S/N AA1-0009, built 1968 (OpenAirDocs)
- Reported make and model: AMER AVCO AA-1
- Registry model: [American AA-1](https://openairdocs.org/model/american-aa-1) (registry code 0630610) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Longmont Muni

## Other investigations on N5607L (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 MIA93LA101](https://openairdocs.org/ntsb/MIA93LA101), Apr 14, 1993: American AA-1 (N5607L), Iuka, MS, destroyed. Probable cause: THE PILOT'S IMPROPER RECOVERY FROM A BOUNCED LANDING AND THE SUBSEQUENT LOSS OF CONTROL DUE TO A STALL/MUSH CONDITION. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT'S LACK OF TOTAL EXPERIENCE.

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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