# NTSB CHI73AC055: Lear Jet 23, N613W, Ypsilanti, MI, December 12, 1972

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 12, 1972
- Place: Ypsilanti, MI · YPSILANTI, MI
- Location: 42.2444° N, 83.6212° W: Placed by OpenAirDocs: center of Ypsilanti, MI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.2444&lon=-83.6212&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report April 2, 1973
- Report: Brief approved by the director
- Safety recommendations: Yes
- NTSB case key (mKey): 79901
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI73AC055
- Page: https://openairdocs.org/ntsb/CHI73AC055

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3958  72/12/12   YPSILANTI,MICH      LEAR JET 23         CR-  0  0  2  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 1809                    N613W               PX-  0  0  0  AIR TAXI-CARGO            36, 6802 TOTAL HOURS, 254
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - WILLOW RUN
        DEPARTURE POINT             INTENDED DESTINATION
          LONDON,KY                   YPSILANTI,MICH
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: OTHER
           COLLIDED WITH: SNOWBANK                                  LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: OTHER
           MISCELLANEOUS - FOREIGN MATERIAL AFFECTING NORMAL OPERATIONS
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: ICE/SLUSH ON RUNWAY
           MISCELLANEOUS ACTS,CONDITIONS - FAILURE OF TWO OR MORE ENGINES
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - DOWNWIND
           WEATHER - LOW CEILING
           WEATHER - RAIN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-2 ENGINES
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, IN PERSON
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                  300
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          2 MILES OR LESS                                          RAIN
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  RELATIVE BEARING OF WIND
          FOG                                                      LEFT QUARTERING TAIL WIND 203-247 DEGREES
        TEMPERATURE-F                                            WIND DIRECTION-DEGREES
           34                                                      190
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           7                                                       IFR
        TYPE OF FLIGHT PLAN
          IFR
        REMARKS- PLT KNEW BRAKING ACTION POOR.ATMTD GO-AROUND,NO RESPONSE.BOTH ENGS FLAMED OUT-INJESTED ICE/SLUSH.
```

## Aircraft

- Registration: N613W (not matched to a registry record)
- Reported make and model: LEAR JET 23
- Category: Airplane
- Engines: turbo jet
- Damage: Substantial damage
- Airport: Willow Run

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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