# NTSB SEA77DYE06: Piper PA-34, N33589, Verlot, WA, December 27, 1976

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 27, 1976
- Place: Verlot, WA · VERLOT, WA
- Location: 48.1020° N, 121.7592° W: Placed by OpenAirDocs: center of Verlot, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=48.1020&lon=-121.7592&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 17, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 156626
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA77DYE06
- Page: https://openairdocs.org/ntsb/SEA77DYE06

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3834  76/12/27   VERLOT,WA           PIPER PA-34         CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, FL.INSTR.,
        TIME - 1145                    N33589              PX-  0  0  0  TEST                      AGE 32, 1470 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            95 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          RENTON,WA                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: LOW PASS
        PROBABLE CAUSE(S)
           AIRFRAME - FLIGHT CONTROL SURFACES: HORIZONTAL STABILIZER, ATTACHMENTS
           MISCELLANEOUS ACTS,CONDITIONS - FLUTTER
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        REMARKS- FLUTTER CLRNC FLT TEST.BREAK-UP AT 250MPH IMMED AFTER ELEVATOR DOWN-PULSE.ROBERTSON MODIFICATIONS.
```

## Aircraft

- Registration: [N33589](https://openairdocs.org/deregistered/N33589-1977-02-24), registration cancelled 1977-02-24, S/N 34-7570134 (OpenAirDocs)
- Reported make and model: PIPER PA-34
- Registry model: [Piper PA-34-200T](https://openairdocs.org/model/piper-pa-34-200t) (registry code 7103406) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

## 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 19761227040229A](https://openairdocs.org/incident/19761227040229A), Dec 27, 1976: Piper PA34200T, Verlot, WA, Destroyed. Flutter clrnc flt test. Break-up at 250MPH immed after elevator down-pulse. Robertson modifications.

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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