# NTSB NYC76FNA41: Piper PA-18, N6989D, Chatham, MA, July 3, 1976

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 3, 1976
- Place: Chatham, MA · CHATHAM, MA
- Location: 41.6739° N, 69.9629° W: Placed by OpenAirDocs: center of Chatham, MA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.6739&lon=-69.9629&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 25, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 154480
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC76FNA41
- Page: https://openairdocs.org/ntsb/NYC76FNA41

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1649   76/7/3    CHATHAM,MA          PIPER PA-18         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 48, 925
        TIME - 1720                    N6989D              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 60 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - PLEASANT BAY SB
        DEPARTURE POINT             INTENDED DESTINATION
          CHATHAM,MA                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           NOSE OVER/DOWN                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
           POWERPLANT - IGNITION SYSTEM: SPARK PLUG
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING OFF AIRPORT
        REMARKS- LONG PERIODS OF TAXI AT LOW RPM RESULTED IN SPARK PLUG FOULING.R WING CTCTD WATER,ACFT FLIPPED.
```

## Aircraft

- Registration: [N6989D](https://openairdocs.org/deregistered/N6989D-1976-07-15), registration cancelled 1976-07-15, S/N 18-5521 (OpenAirDocs)
- Reported make and model: PIPER PA-18
- Registry model: [Piper PA-18-150](https://openairdocs.org/model/piper-pa-18-150) (registry code 7101828) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Pleasant Bay Sb

## 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 19760703017819A](https://openairdocs.org/incident/19760703017819A), Jul 3, 1976: Piper PA18150, Chatham, MA, Substantial damage. Long periods of taxi at low RPM resulted in spark plug fouling.r wing ctctd water,acft flipped.

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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