# NTSB FTW74FPJ06: EL Tomcat MK5, N11VH, Springer, OK, August 16, 1973

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: August 16, 1973
- Place: Springer, OK · SPRINGER, OK
- Location: 34.2956° N, 97.1175° W: Placed by OpenAirDocs: center of Springer, OK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=34.2956&lon=-97.1175&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report April 9, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 188762
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW74FPJ06
- Page: https://openairdocs.org/ntsb/FTW74FPJ06

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4048  73/8/16    SPRINGER,OKLA       EL TOMCAT MK5       CR-  1  0  0  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1645                    N11VH               PX-  0  0  0  ASSOC CROP CTL ACTIVITY   AGE 28, 2790 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            110 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          ARDMORE,OKLA                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: RETURN TO STRIP
        PROBABLE CAUSE(S)
           MISCELLANEOUS - UNDETERMINED
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  615                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - OTHER                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - USED
          CRASH HELMET - AVAILABLE USED                            COCKPIT CRASHPAD - NOT INSTALLED
          CRASH BAR - NOT INSTALLED                                TANK/HOPPER-LOCATION - SIDES
          TERRAIN-TYPE -LEVEL,FLAT                                 ELEVATION-AREA BEING TREATED-FEET -  824
          SWATH RUN-HOW FLOWN - CROSSWIND
         FIRE AFTER IMPACT
        REMARKS- PLT CHOLINESTERASE 2.53,NORMAL IS 3.35-5.67.HIT TREE PRIOR TO GND IMPACT.16GALS FUEL LAST TKOF.
```

## Aircraft

- Registration: [N11VH](https://openairdocs.org/deregistered/N11VH-2011-07-19), registration cancelled 2011-07-19, S/N 2027, built 1958 (OpenAirDocs)
- Reported make and model: EL TOMCAT MK5
- Registry model: [Bell 47G-2](https://openairdocs.org/model/bell-47g-2) (registry code 1181008) (OpenAirDocs)
- Registry engine: [Lycoming VO-435 series](https://openairdocs.org/engine/lycoming-vo-435-series) (registry code 41525, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## 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 19730816031029A](https://openairdocs.org/incident/19730816031029A), Aug 16, 1973: Isenbg OH13EISENB, Springer, OK, Substantial damage. Plt cholinesterase 2.53,normal is 3.35-5.67.hit tree prior to gnd impact.16GALS fuel last tkof.

## Other investigations on N11VH (6)

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.

- [NTSB SEA99LA149](https://openairdocs.org/ntsb/SEA99LA149), Aug 26, 1999: Bell 47G-2 (N11VH), Benton City, WA, destroyed, 1 fatal. Probable cause: A loss of power for undetermined reasons and the failure of the pilot to maintain adequate rotor RPM following the power loss. Contributing factors were the pilot's lack of certification and total…
- [NTSB SEA86LA143](https://openairdocs.org/ntsb/SEA86LA143), Jun 12, 1986: Bell 47G-2 (N11VH), Zillah, WA, destroyed
- [NTSB SEA85LA155](https://openairdocs.org/ntsb/SEA85LA155), Jul 2, 1985: Bell 47G2 (N11VH), Roosevelt, WA, substantial damage
- [NTSB SEA84LA132](https://openairdocs.org/ntsb/SEA84LA132), Jun 14, 1984: Bell 47G2A (N11VH), Buena, WA, substantial damage
- [NTSB SEA82DA072](https://openairdocs.org/ntsb/SEA82DA072), May 18, 1982: Bell 47G-2 (N11VH), Grandview, WA, substantial damage
- [NTSB SEA82DA050](https://openairdocs.org/ntsb/SEA82DA050), Apr 10, 1982: Bell 47G-2A (N11VH), Lyle, WA, 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.