# NTSB ANC81IA078: Lear Jet 25, N424RD, Cobblestone, AK, July 8, 1981

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: July 8, 1981
- Place: Cobblestone, AK · COBBLESTONE, AK
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 8 uninjured
- Status: Completed, report August 3, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 123613
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC81IA078
- Page: https://openairdocs.org/ntsb/ANC81IA078

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
5-0065   81/7/8    COBBLESTONE,AK      LEAR JET 25         CR-  0  0  2  COMMERCIAL                ATP,FLIGHT INSTR., AGE
        TIME - 1501                    N424RD              PX-  0  0  6  AIR TAXI-PASSG            30, 5500 TOTAL HOURS, 570
                                       DAMAGE-MINOR        OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - COBBLESTONE
        DEPARTURE POINT             INTENDED DESTINATION
          ANCHORAGE,AK                COBBLESTONE,AK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           COLLIDED WITH: SNOWBANK                                  LANDING: ROLL
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: NOSEWHEEL STEERING
           SYSTEMS - ELECTRICAL SYSTEM: MOTORS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: SNOW WINDROWS
        FACTOR(S)
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: WET RUNWAY
        REMARKS- NOSE WHL STEERING SERVO,SN 025-2380066-68,FAILED.
```

## Aircraft

- Registration: N424RD (not matched to a registry record)
- Reported make and model: LEAR JET 25
- Category: Airplane
- Engines: turbo jet
- Damage: Minor damage
- Airport: Cobblestone

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Incident 19810708064079I](https://openairdocs.org/incident/19810708064079I), Jul 8, 1981: Lear 25, Cobblestone, AK, Minor damage. Lost directional control on rollout. Found nose steering actuator motor broken form mounting.

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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