# NTSB CHI75AC039: Cessna 421B, N396DB, Rockford, IL, October 31, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 31, 1974
- Place: Rockford, IL · ROCKFORD, IL
- Location: 42.2711° N, 89.0940° W: Placed by OpenAirDocs: center of Rockford, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.2711&lon=-89.0940&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report December 16, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 142950
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI75AC039
- Page: https://openairdocs.org/ntsb/CHI75AC039

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3865  74/10/31   ROCKFORD,ILL        CESSNA 421B         CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1315                    N396DB              PX-  0  0  1  AIR TAXI-CARGO            AGE 24, 1425 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            10 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - GREATER ROCKFORD
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          FORT WAYNE,IND              ROCKFORD,ILL                 WINCHESTER,IND
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GEAR RETRACTED                                           TAXI: FROM LANDING
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE INSPECTION OF AIRCRAFT (MAINTENANCE PERSONNEL)
           AIRFRAME - LANDING GEAR: NORMAL RETRACTION/EXTENSION ASSEMBLY
        REMARKS- GR DNLOCK NOT CKD FOR TENSION WHEN RIGGED.UPPR BARREL ASSY & LWR FWD CLEVIS,BELLCRANK ASSY FAILED.
```

## Aircraft

- Registration: [N396DB](https://openairdocs.org/deregistered/N396DB-2011-07-20), registration cancelled 2011-07-20, S/N 421B0139 (OpenAirDocs)
- Reported make and model: CESSNA 421B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (registry code 2076014) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Greater Rockford

## 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 19741031039399A](https://openairdocs.org/incident/19741031039399A), Oct 31, 1974: Cessna 421B, Rockford, IL, Substantial damage. Gr dnlock not ckd for tension when rigged. Uppr barrel assy & lwr fwd clevis,bellcrank assy failed.

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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