# NTSB CHI71FDJ45: Piper PA-23, N5554Y, Watertown, WI, March 4, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 4, 1971
- Place: Watertown, WI · WATERTOWN, WI
- Location: 43.1894° N, 88.7289° W: Placed by OpenAirDocs: center of Watertown, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.1894&lon=-88.7289&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report October 29, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 160244
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI71FDJ45
- Page: https://openairdocs.org/ntsb/CHI71FDJ45

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0224   71/3/4    WATERTOWN,WIS       PIPER PA-23         CR-  0  0  2  NONCOMMERCIAL             COMMERCIAL, AGE 43, 10985
        TIME - 1220                    N5554Y              PX-  0  0  1  CORP/EXEC                 TOTAL HOURS, 3835 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        NAME OF AIRPORT - WATERTOWN
        DEPARTURE POINT             INTENDED DESTINATION
          ELGIN,ILL                   WATERTOWN,WIS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO EXTEND LANDING GEAR
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - CHECKLIST-FAILED TO USE
           AIRFRAME - LANDING GEAR: LANDING GEAR WARNING AND INDICATING COMPONENTS
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER CLEARANCE-TOLERANCE
        REMARKS- NO LDG GR MALFUNCTION. GR LTS AND HORN DIDNT ACTIVATE UNTIL THROTTLE ALMOST AT IDLE.
```

## Aircraft

- Registration: [N5554Y](https://openairdocs.org/deregistered/N5554Y-2012-09-24), registration cancelled 2012-09-24, S/N 27-2656, built 1964 (OpenAirDocs)
- Reported make and model: PIPER PA-23
- Registry model: [Piper PA-23-250](https://openairdocs.org/model/piper-pa-23-250) (registry code 7102308) (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: Watertown

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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