# NTSB CHI66F0741: Beech B-50, N3571B, Cascade, MI, April 29, 1966

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 29, 1966
- Place: Cascade, MI · CASCADE, MI
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report July 7, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 172305
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI66F0741
- Page: https://openairdocs.org/ntsb/CHI66F0741

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1206  66/4/29    CASCADE MICH        BEECH B-50          CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 58, 3147
        TIME - 1229                    N3571B              PX-  0  0  2  BUSINESS                  TOTAL HOURS, 985 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - KENT COUNTY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: NORMAL RETRACTION/EXTENSION ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED MECHANICAL DISCREPANCY
        REMARKS- NOSE GEAR DRIVE SPROCKET PIN IMPROPERLY INSTALLED AND FELL OUT.
```

## Aircraft

- Registration: [N3571B](https://openairdocs.org/deregistered/N3571B-2026-08-10), registration cancelled 2026-08-10, S/N CH-31, built 1954 (OpenAirDocs)
- Reported make and model: BEECH B-50
- Registry model: [Beech B50](https://openairdocs.org/model/beech-b50) (registry code 1152506) (OpenAirDocs)
- Registry engine: [Lycoming GO-435-C2B2](https://openairdocs.org/engine/lycoming-go-435-c2b2) (registry code 42079, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Kent County

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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