# NTSB DEN69D0142: Piper PA-31, N9036Y, Denver, CO, September 19, 1968

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 19, 1968
- Place: Denver, CO · DENVER, CO
- Location: 39.7392° N, 104.9847° W: Placed by OpenAirDocs: center of Denver, CO, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.7392&lon=-104.9847&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report January 3, 1969
- Report: Brief approved by the director
- NTSB case key (mKey): 107433
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN69D0142
- Page: https://openairdocs.org/ntsb/DEN69D0142

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3916  68/9/19    DENVER,COLO         PIPER PA-31         CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, FL.INSTR.,
        TIME - 1753                    N9036Y              PX-  0  0  3  DEMONSTRATION             AGE 45, 6800 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            345 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - STAPLETON
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: NORMAL RETRACTION/EXTENSION ASSEMBLY
           AIRFRAME - LANDING GEAR: EMERGENCY/EXTENSION ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - JAMMED
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - LANDED ON FOAMED RUNWAY
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED MECHANICAL DISCREPANCY
        REMARKS- LEFT GR DOOR HINGE ATTACH RIVETS FAILED,ALLOWED DOOR TO JAM GR.
```

## Aircraft

- Registration: [N9036Y](https://openairdocs.org/deregistered/N9036Y-2018-01-29), registration cancelled 2018-01-29, S/N 31-49, built 1967 (OpenAirDocs)
- Reported make and model: PIPER PA-31
- Registry model: [Piper PA-31-310](https://openairdocs.org/model/piper-pa-31-310) (registry code 7103102) (OpenAirDocs)
- Registry engine: [Lycoming TI0-540 series](https://openairdocs.org/engine/lycoming-ti0-540-series) (registry code 41533, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Stapleton

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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