# NTSB MKC67A0016: Piper PA-18A, N9939D, East Chain, MN, August 25, 1966

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: August 25, 1966
- Place: East Chain, MN · EAST CHAIN, MN
- Location: 43.5588° N, 94.3652° W: Placed by OpenAirDocs: center of East Chain, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.5588&lon=-94.3652&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report March 17, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 122490
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC67A0016
- Page: https://openairdocs.org/ntsb/MKC67A0016

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0757  66/8/25  NR.EAST CHAIN MINN    PIPER PA-18A        CR-  1  0  0  COMMERCIAL                COMMERCIAL, AGE 18, 394
        TIME - 1930                    N9939D              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 139 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL                                                    IN FLIGHT: PROCEDURE TURNAROUND
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  101                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - CORN                                      TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - BELLY                             TERRAIN-TYPE -ROLLING
          ELEVATION-AREA BEING TREATED-FEET -  1140                SWATH RUN-HOW FLOWN - WIND CALM
          PROCEDURE TURNAROUND - THIRD 1/3 TURN
         FIRE AFTER IMPACT
```

## Aircraft

- Registration: [N9939D](https://openairdocs.org/deregistered/N9939D-1968-03-05), registration cancelled 1968-03-05, S/N 18-6994 (OpenAirDocs)
- Reported make and model: PIPER PA-18A
- Registry model: [Piper PA-18A](https://openairdocs.org/model/piper-pa-18a) (registry code 7101804) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

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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