# NTSB UNK64X3641: Piper PA16, N5781H, Islip, NY, August 28, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 28, 1964
- Place: Islip, NY · ISLIP, NY
- Location: 40.7303° N, 73.2161° W: Placed by OpenAirDocs: center of Islip, NY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.7303&lon=-73.2161&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 4, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 181950
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X3641
- Page: https://openairdocs.org/ntsb/UNK64X3641

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2658  64/8/28    ISLIP NY            PIPER PA16          CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 43, 4750
        TIME - 1327                    N5781H              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 40 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: NORMAL CRUISE
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           AIRFRAME - FUSELAGE: SKIN AND ATTACHMENTS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE INSPECTION OF AIRCRAFT (MAINTENANCE PERSONNEL)
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  PITCH CONTROL PROBLEM
        REMARKS- FABRIC FAILED AT ATTACH POINT TO WINDSHIELD.
```

## Aircraft

- Registration: [N5781H](https://openairdocs.org/deregistered/N5781H-2019-12-13), registration cancelled 2019-12-13, S/N 16-396, built 1949 (OpenAirDocs)
- Reported make and model: PIPER PA16
- Registry model: [Piper PA-16](https://openairdocs.org/model/piper-pa-16) (registry code 7101602) (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

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.