# NTSB MKC79FA010: Lear Jet 25, N40SN, Minneapolis, MN, December 20, 1978

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: December 20, 1978
- Place: Minneapolis, MN · MINNEAPOLIS, MN
- Location: 44.9800° N, 93.2638° W: Placed by OpenAirDocs: center of Minneapolis, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.9800&lon=-93.2638&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 5 serious, 2 minor
- Status: Completed, report August 31, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 138089
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC79FA010
- Page: https://openairdocs.org/ntsb/MKC79FA010

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4353  78/12/20   MINNEAPOLIS,MN      LEAR JET 25         CR-  0  2  0  MISCELLANEOUS             COMMERCIAL, AGE 33, 1147
        TIME - 0802                    N40SN               PX-  0  3  2  OTHER                     TOTAL HOURS, 262 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - MINN-ST PAUL INTL
        DEPARTURE POINT             INTENDED DESTINATION
          MINNEAPOLIS,MN              EVANSVILLE,IN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           PILOT IN COMMAND - MISUSED OR FAILED TO USE FLAPS
           MISCELLANEOUS ACTS,CONDITIONS - AIRFRAME ICE
           MISCELLANEOUS ACTS,CONDITIONS - INCORRECT TRIM SETTING
        FACTOR(S)
           WEATHER - SNOW
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OBSCURATION                                               600
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          3/4 MILE OR LESS                                         SNOW
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          FOG                                                       29
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          120                                                       2
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          IFR                                                      IFR
        REMARKS- SNOW/ICE ON WINGS.FLAPS 28DEG.FULL NOSEUP TRIM.
```

## Aircraft

- Registration: N40SN (not matched to a registry record)
- Reported make and model: LEAR JET 25
- Category: Airplane
- Engines: turbo jet
- Damage: Destroyed
- Airport: Minn-St Paul Intl

## 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 19781220045049A](https://openairdocs.org/incident/19781220045049A), Dec 20, 1978: Lear 25, Minneapolis, MN, Substantial damage. Under investigation.

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.