# NTSB CHI72AC086: Beech C-45G, N3666G, Chicago, IL, May 2, 1972

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 2, 1972
- Place: Chicago, IL · CHICAGO, IL
- Location: 41.8500° N, 87.6501° W: Placed by OpenAirDocs: center of Chicago, IL, within about 9 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.8500&lon=-87.6501&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report February 15, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 166001
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI72AC086
- Page: https://openairdocs.org/ntsb/CHI72AC086

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1947   72/5/2    CHICAGO,ILL         BEECH C-45G         CR-  0  0  2  COMMERCIAL                ATP,FLIGHT INSTR., AGE
        TIME - 1840                    N3666G              PX-  0  0  0  COMMUTER AIR CARRIER      28, 3335 TOTAL HOURS, 485
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0  AIR TAXI-CARGO S-D        IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - OHARE
        DEPARTURE POINT             INTENDED DESTINATION
          GALESBURG,ILL               CHICAGO,ILL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 TAXI: FROM LANDING
           COLLIDED WITH: OBJECT                                    TAXI: FROM LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
        FACTOR(S)
           MISCELLANEOUS - PROP/JET/ROTOR BLAST
           AIRFRAME - LANDING GEAR: BRAKING SYSTEM (NORMAL SYSTEM)
        REMARKS- TAXIING DWNWND,PULLED OVR TO LET B-727 PASS,RETURNED TO CNTRLN OF TWY.L BRAKE WEAK,T/W UNLOCKED.
```

## Aircraft

- Registration: [N3666G](https://openairdocs.org/aircraft/N3666G), registered now, S/N 51-11771, built 1951 (OpenAirDocs)
- Reported make and model: BEECH C-45G
- Registry model: [Beech C-45H](https://openairdocs.org/model/beech-c-45h) (registry code 1151018) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Ohare

## Other investigations on N3666G (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 NYC75FGT09](https://openairdocs.org/ntsb/NYC75FGT09), Oct 27, 1974: Beech E18S (N3666G), Mcsherrytown, PA, substantial damage

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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