# NTSB NYC69A0094: Piper PA-23, N5090Y, Portland, ME, April 18, 1969

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 18, 1969
- Place: Portland, ME · PORTLAND, ME
- Location: 43.6332° N, 70.1853° W: Placed by OpenAirDocs: center of Portland, ME, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.6332&lon=-70.1853&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 6 uninjured
- Status: Completed, report July 22, 1969
- Report: Brief approved by the director
- NTSB case key (mKey): 184544
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC69A0094
- Page: https://openairdocs.org/ntsb/NYC69A0094

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1617  69/4/18    PORTLAND,ME         PIPER PA-23         CR-  0  0  2  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1100                    N5090Y              PX-  0  0  4  AIR TAXI-PASSG            AGE 24, 1477 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            39 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - PORTLAND
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GEAR COLLAPSED                                           STATIC: STARTING ENGINE(S)
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO FOLLOW APPROVED PROCEDURES,DIRECTIVES,ETC.
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           AIRFRAME - LANDING GEAR: NORMAL RETRACTION/EXTENSION ASSEMBLY
           SYSTEMS - HYDRAULIC SYSTEM: BY-PASS VALVE
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
        REMARKS- ANTI-RETRACT POPPET VALVE REINSTALLED BACKWARDS.GR SELECTOR UP,CLOSED VALVE ALLOWED PRES BUILD-UP.
```

## Aircraft

- Registration: [N5090Y](https://openairdocs.org/deregistered/N5090Y-1970-06-30), registration cancelled 1970-06-30, S/N 272110 (OpenAirDocs)
- Reported make and model: PIPER PA-23
- Registry model: [Piper PA-23-250](https://openairdocs.org/model/piper-pa-23-250) (registry code 7102308) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Portland

## Other investigations on N5090Y (2)

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 NYC70A0061](https://openairdocs.org/ntsb/NYC70A0061), Dec 10, 1969: Piper PA-23 (N5090Y), Passadumkeag, ME, destroyed, 3 fatal
- [NTSB UNK64X1980](https://openairdocs.org/ntsb/UNK64X1980), May 27, 1964: Piper PA23 (N5090Y), Millinocket, ME, 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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