# NTSB MKC71DCD23: Piper PA-11, N5509H, Emerson, IA, August 18, 1970

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: August 18, 1970
- Place: Emerson, IA · EMERSON, IA
- Location: 41.0180° N, 95.4027° W: Placed by OpenAirDocs: center of Emerson, IA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.0180&lon=-95.4027&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report June 16, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 107302
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC71DCD23
- Page: https://openairdocs.org/ntsb/MKC71DCD23

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3561  70/8/18    EMERSON,IOWA        PIPER PA-11         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 51, 1700
        TIME - 1905                    N5509H              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 120 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - EMERSON
        DEPARTURE POINT             INTENDED DESTINATION
          EMERSON,IOWA                LOCAL
        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 -  175                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - CORN                                      TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - BELLY                             TERRAIN-TYPE -ROLLING
          SWATH RUN-HOW FLOWN - WIND CALM                          PROCEDURE TURNAROUND - THIRD 1/3 TURN
```

## Aircraft

- Registration: [N5509H](https://openairdocs.org/aircraft/N5509H), registered now, S/N 11-1011, built 1949 (OpenAirDocs)
- Reported make and model: PIPER PA-11
- Registry model: [Piper PA-11](https://openairdocs.org/model/piper-pa-11) (registry code 7101102) (OpenAirDocs)
- Registry engine: [Continental C90 series](https://openairdocs.org/engine/continental-c90-series) (registry code 17009, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Emerson

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.