# NTSB LAX74DUJ12: Let-Np-K L-13, N3460, Tucson, AZ, August 25, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 25, 1973
- Place: Tucson, AZ · TUCSON, AZ
- Location: 32.2217° N, 110.9265° W: Placed by OpenAirDocs: center of Tucson, AZ, within about 9 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.2217&lon=-110.9265&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 31, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 189007
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX74DUJ12
- Page: https://openairdocs.org/ntsb/LAX74DUJ12

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2757  73/8/25    TUCSON,ARIZ         LET-NP-K L-13       CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 29, 93 TOTAL
        TIME - 1055                    N3460               PX-  0  0  1  PLEASURE/PERSONAL TRANSP  HOURS, 8 IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - RYAN FIELD
        DEPARTURE POINT             INTENDED DESTINATION
          TUCSON,ARIZ                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           UNDERSHOOT                                               LANDING: FINAL APPROACH
           COLLIDED WITH: TREES                                     LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        FACTOR(S)
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: POOR/INADEQUATE DESIGN
           TERRAIN - HIGH OBSTRUCTIONS
           MISCELLANEOUS ACTS,CONDITIONS - PREMATURE FLAP RETRACTION
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- FLAP AND SPOILER CONTROLS COLOCATED,SAME DESIGN.
```

## Aircraft

- Registration: [N3460](https://openairdocs.org/deregistered/N3460-2018-08-13), registration cancelled 2018-08-13, S/N 173930, built 1969 (OpenAirDocs)
- Reported make and model: LET-NP-K L-13
- Registry model: [Let BLANIK L-13](https://openairdocs.org/model/let-blanik-l-13) (registry code 1360306) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider
- Engines: none
- Damage: Substantial damage
- Airport: Ryan Field

## 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 19730825027839A](https://openairdocs.org/incident/19730825027839A), Aug 25, 1973: Let L13BLANIK, Tucson, AZ, Substantial damage. Flap and spoiler controls colocated,same design.

## Other investigations on N3460 (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 SEA76FYG54](https://openairdocs.org/ntsb/SEA76FYG54), Jun 5, 1976: Let-Np-K L-13 (N3460), Ephrata, WA, 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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.