# NTSB SEA72D!A27: Piper PA-18, N4716A, Irwin, ID, March 23, 1972

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 23, 1972
- Place: Irwin, ID · IRWIN, ID
- Location: 43.4016° N, 111.2727° W: Placed by OpenAirDocs: center of Irwin, ID, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.4016&lon=-111.2727&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report January 10, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 165658
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA72D!A27
- Page: https://openairdocs.org/ntsb/SEA72D!A27

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1099  72/3/23    IRWIN,ID            PIPER PA-18         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 26, 360
        TIME - 1115                    N4716A              PX-  0  0  1  BUSINESS                  TOTAL HOURS, 383 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          REXBURG,ID                  ROCK SPRINGS,WYO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
        FACTOR(S)
           TERRAIN - OTHER
        REMARKS- PLT LNDD ON A LARGE FROZEN LAKE.MN WHEELS BROKE THRU ICE.
```

## Aircraft

- Registration: [N4716A](https://openairdocs.org/deregistered/N4716A-1977-07-07), registration cancelled 1977-07-07, S/N 184934 (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

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.