# NTSB SEA78DYA16: Enstrom 280C, N123MT, Boise, ID, July 19, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 19, 1978
- Place: Boise, ID · BOISE, ID
- Location: 43.6135° N, 116.2035° W: Placed by OpenAirDocs: center of Boise, ID, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.6135&lon=-116.2035&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 3, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 141234
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA78DYA16
- Page: https://openairdocs.org/ntsb/SEA78DYA16

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1485  78/7/19  NR.BOISE,ID           ENSTROM 280C        CR-  0  0  1  NONCOMMERCIAL             ATP,FLIGHT INSTR., AGE
        TIME - 1525                    N123MT              PX-  0  0  0  PRACTICE                  41, 6900 TOTAL HOURS, 30
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         BOISE,ID                     LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: CLIMB TO CRUISE
           COLLISION WITH GROUND/WATER: CONTROLLED                  LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - OVERHEATED
           PILOT IN COMMAND - EXERCISED POOR JUDGMENT
        FACTOR(S)
           WEATHER - HIGH TEMPERATURE
           TERRAIN - HIGH OBSTRUCTIONS
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      85
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- OVERHEATED ENG CAUSED VAPOR LOCK. PLT WAS HOVERING PREV,TOOK OFF TO COOL ENG. HELI HIT RIDGE.
```

## Aircraft

- Registration: [N123MT](https://openairdocs.org/deregistered/N123MT-2022-02-05), registration cancelled 2022-02-05, S/N 1063, built 1976 (OpenAirDocs)
- Reported make and model: ENSTROM 280C
- Registry model: [Enstrom Helicopter 280C](https://openairdocs.org/model/enstrom-helicopter-280c) (registry code 3300505) (OpenAirDocs)
- Registry engine: [Lycoming HI0-360 series](https://openairdocs.org/engine/lycoming-hi0-360-series) (registry code 41553, turbo-shaft) (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 19780719016739A](https://openairdocs.org/incident/19780719016739A), Jul 19, 1978: Enstrm 280C, Boise, ID, Substantial damage. Overheated eng caused vapor lock. Plt was hovering prev,took off ool eng. Heli hit ridge.

## Other investigations on N123MT (1)

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 LAX94LA239](https://openairdocs.org/ntsb/LAX94LA239), Jun 5, 1994: Enstrom 280C (N123MT), California City, CA, substantial damage. Probable cause: the pilot's inadequate compensation for the gusty wind conditions and his subsequent failure to maintain control of the helicopter.

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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