# NTSB DEN77FA046: Piper PA-22, N3715A, Englewood, CO, June 26, 1977

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: June 26, 1977
- Place: Englewood, CO · ENGLEWOOD, CO
- Location: 39.6470° N, 104.9945° W: Placed by OpenAirDocs: center of Englewood, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.6470&lon=-104.9945&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report August 4, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 147328
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN77FA046
- Page: https://openairdocs.org/ntsb/DEN77FA046

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2764  77/6/26  NR.ENGLEWOOD,CO       PIPER PA-22         CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 43, 800
        TIME - 2138                    N3715A              PX-  1  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, UNK/NR IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - ARAPAHOE COUNTY
        DEPARTURE POINT             INTENDED DESTINATION
         ENGLEWOOD,CO                 LOS ALAMOS,NM
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           PILOT IN COMMAND - MISJUDGED DISTANCE,SPEED,AND ALTITUDE
        FACTOR(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           WEATHER - HIGH DENSITY ALTITUDE
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          BROKEN                                                    6000
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      86
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          150                                                       12
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      VFR
         FIRE AFTER IMPACT
        REMARKS- #4 INTAKE VALVE LOBE WORN.TAPPET BODIES GALLED.MAIN BEARINGS WORN,SCORED.
```

## Aircraft

- Registration: [N3715A](https://openairdocs.org/deregistered/N3715A-1977-11-16), registration cancelled 1977-11-16, S/N 22-1955 (OpenAirDocs)
- Reported make and model: PIPER PA-22
- Registry model: [Piper PA-22-135](https://openairdocs.org/model/piper-pa-22-135) (registry code 7102206) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Arapahoe County

## 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 19770626032259A](https://openairdocs.org/incident/19770626032259A), Jun 26, 1977: Piper PA22135, Englewood, CO, Destroyed, 1 fatal. #4 Intake valve lobe worn. Tappet bodies galled. Main bearings worn,scored.

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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