# NTSB SEA76AS031: Cessna R172, N12987, Klamath Falls, OR, December 21, 1975

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: December 21, 1975
- Place: Klamath Falls, OR · KLAMATH FALLS, OR
- Location: 42.2158° N, 121.7758° W: Placed by OpenAirDocs: center of Klamath Falls, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.2158&lon=-121.7758&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 3 fatal, 1 serious
- Status: Completed, report February 10, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 151632
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA76AS031
- Page: https://openairdocs.org/ntsb/SEA76AS031

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3865  75/12/21   KLAMATH FALLS,OR    CESSNA R172         CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 37, 69 TOTAL
        TIME - 1824                    N12987              PX-  2  1  0  PLEASURE/PERSONAL TRANSP  HOURS, 10 IN TYPE, NOT
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          FT.HOOD,TX                  YAKIMA,WA                    TONOPAH,NV
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - CONTINUED VFR FLIGHT INTO ADVERSE WEATHER CONDITIONS
           MISCELLANEOUS ACTS,CONDITIONS - AIRFRAME ICE
        FACTOR(S)
           PILOT IN COMMAND - BECAME LOST/DISORIENTED
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           TERRAIN - HIGH OBSTRUCTIONS
           WEATHER - LOW CEILING
           WEATHER - SNOW
           WEATHER - ICING CONDITIONS-INCLUDES SLEET,FREEZING RAIN,ETC.
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OBSCURATION                                              UNKNOWN/NOT REPORTED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          ZERO                                                     RAIN
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TYPE OF WEATHER CONDITIONS
          BLOWING SNOW                                             IFR
        TYPE OF FLIGHT PLAN
          NONE
        REMARKS- UN MAINTAIN FLT. HIT MTN SLOPE. ACFT NOT EQUIPPED WITH ANTI-ICING,DE-ICING SYS.
```

## Aircraft

- Registration: [N12987](https://openairdocs.org/deregistered/N12987-1976-06-21), registration cancelled 1976-06-21, S/N R-172-0139 (OpenAirDocs)
- Reported make and model: CESSNA R172
- Registry model: [Cessna R172E](https://openairdocs.org/model/cessna-r172e) (registry code 2072413) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

## 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 19751221040859A](https://openairdocs.org/incident/19751221040859A), Dec 21, 1975: Cessna R172E, Klamath Falls, OR, Destroyed, 2 fatal. Un maintain flt. Hit mtn slope. Acft not equipped with anti-icing,de-icing sys.

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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