# NTSB CHI71FBQ35: Lear Jet 23, N658L, Danville, IL, April 10, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 10, 1971
- Place: Danville, IL · DANVILLE, IL
- Location: 40.1426° N, 87.6107° W: Placed by OpenAirDocs: center of Danville, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.1426&lon=-87.6107&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 6 uninjured
- Status: Completed, report September 7, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 160736
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI71FBQ35
- Page: https://openairdocs.org/ntsb/CHI71FBQ35

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4535  71/4/10    DANVILLE,ILL        LEAR JET 23         CR-  0  0  2  NONCOMMERCIAL             ATP,FLIGHT INSTR., AGE
        TIME - 1045                    N658L               PX-  0  0  4  BUSINESS                  49, 31105 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            250 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - VERMILLION CTY
        DEPARTURE POINT             INTENDED DESTINATION
          JACKSONVILLE,FLA            DANVILLE,ILL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           FIRE OR EXPLOSION: IN FLIGHT                             LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           SYSTEMS - ELECTRICAL SYSTEM: BATTERIES
           MISCELLANEOUS ACTS,CONDITIONS - EXCESSIVE TEMPERATURE
           MISCELLANEOUS ACTS,CONDITIONS - FIRE IN CABIN,COCKPIT,BAGGAGE COMPARTMENT
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - UNDER TORQUED
        REMARKS- R BATTERY HAD THERMAL RUNAWAY. LINK CAP SCREWS OF NR 4 CELL SHOWED LOW TORQUE. DMG AIRFRAME.
```

## Aircraft

- Registration: N658L (not matched to a registry record)
- Reported make and model: LEAR JET 23
- Category: Airplane
- Engines: turbo jet
- Damage: Substantial damage
- Airport: Vermillion Cty

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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