ASN Wikibase Occurrence # 237709
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| Date: | Saturday 4 July 2020 |
| Time: | 23:21 |
| Type: |  Piper PA-22-135 Tri-Pacer |
| Owner/operator: | Private |
| Registration: | N3604A |
| MSN: | 22-1864 |
| Year of manufacture: | 1953 |
| Engine model: | Lycoming O-320B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Soldotna, AK -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Sterling airstrip, AK (AK84) |
| Homer Airport, AK (HOM) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
In cruise flight, the private pilot heard and felt a “pop” emit from the airplane. He immediately noticed the airplane descending but verified he still had elevator continuity. Unable to maintain altitude, the pilot made an emergency landing on a nearby paved road; however, the airplane landed hard, and the main landing gear collapsed.
Postaccident examination revealed control continuity, but it was noted that the adhesive adhering the fabric above the windscreen had separated.
FAA Airworthiness Directive (AD) 74-17-04 applies to certain Piper airplanes, including PA-22 series airplanes that are covered with cotton or linen, and was issued to prevent the sudden failure of the material at the top of the windshield by requiring the installation of a reinforcement metal strip. Because the accident airplane was covered in a heavy-duty polyester material, the hardware specified in the AD was not required for installation on the airframe nor was it installed.
It is likely that the adhesive adhering the fabric above the windscreen delaminated and disrupted the airflow over the airplane. It was not determined why the adhesive failed/delaminated.
Probable Cause: The delamination of the fabric material from the fuselage above the windscreen due to failed adhesive, which resulted in disrupted airflow and a subsequent hard landing.
Accident investigation:
 |
|
Sources:
FAA
https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/101545/pdf
https://abpic.co.uk/pictures/registration/N3604A (photo)
Location
Media:
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 07-Jul-2020 15:42 | Captain Adam | Added |
| 26-Feb-2022 20:54 | harro | Updated [Departure airport, Embed code] |
| 26-Feb-2022 20:59 | harro | Updated [Departure airport, Destination airport, Source, Narrative] |
| 27-Apr-2022 20:02 | Captain Adam | Updated [Destination airport, Narrative, Accident report] |
Corrections or additions? ... Edit this accident description
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