# NTSB CHI72DEE45: Mooney M20B, N74578, Rockford, IL, November 13, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: November 13, 1971
- 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: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report April 21, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 163903
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI72DEE45
- Page: https://openairdocs.org/ntsb/CHI72DEE45

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3440  71/11/13   ROCKFORD,ILL        MOONEY M20B         CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1745                    N74578              PX-  0  0  0  DUAL                      AGE 26, 1340 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            3 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - GREATER ROCKFORD
        DEPARTURE POINT             INTENDED DESTINATION
          ROCKFORD,ILL                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: ROLL
        PROBABLE CAUSE(S)
           DUAL STUDENT - FAILED TO ASSURE THE GEAR WAS DOWN AND LOCKED
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
        FACTOR(S)
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           AIRFRAME - LANDING GEAR: LANDING GEAR WARNING AND INDICATING COMPONENTS
           MISCELLANEOUS ACTS,CONDITIONS - TOUCH AND GO LANDING
        REMARKS- BOTH PLTS KNEW OF GR DOWN LT MALFUNCTION.GR WARNING HORN ALSO INOP.ACFT ROLLED ABOUT 400 FT.
```

## Aircraft

- Registration: [N74578](https://openairdocs.org/deregistered/N74578-2004-10-06), registration cancelled 2004-10-06, S/N 1889, built 1961 (OpenAirDocs)
- Reported make and model: MOONEY M20B
- Registry model: [Mooney M20B](https://openairdocs.org/model/mooney-m20b) (registry code 5870206) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Greater Rockford

## Other investigations on N74578 (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 IAD74DKM32](https://openairdocs.org/ntsb/IAD74DKM32), Dec 26, 1973: Mooney M20B (N74578), Rosman, NC, 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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