# Plates/skins (aux fuselage)

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft structures](https://openairdocs.org/ntsb-findings/0103) › [Fuselage](https://openairdocs.org/ntsb-findings/010353) › Plates/skins (aux fuselage)
- NTSB code: 01035330
- Cases: 4
- In the probable cause: 3
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01035330/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01035330/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01035330

## Cases per year (in the probable cause / all)

- 2008: 1 / 1
- 2009: 1 / 1
- 2010: 1 / 1
- 2024: 0 / 1

## Defining events in these cases

- [Aircraft structural failure](https://openairdocs.org/ntsb-events/337): 2 cases
- [Miscellaneous/other](https://openairdocs.org/ntsb-events/900): 1 cases
- [Ground collision](https://openairdocs.org/ntsb-events/200): 1 cases

## Aircraft models (registry)

- [Lake LA-4](https://openairdocs.org/model/lake-la-4): 1 cases
- [Mcdonnell Douglas DC-9-87](https://openairdocs.org/model/mcdonnell-douglas-dc-9-87): 1 cases
- [Boeing 757-223](https://openairdocs.org/model/boeing-757-223): 1 cases
- [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4): 1 cases

## Other findings in the same cases

- [Equipment manufacture](https://openairdocs.org/ntsb-findings/04013010) (Organizational issues): 1 cases
- [Selection/certification/testing, general](https://openairdocs.org/ntsb-findings/04012000) (Organizational issues): 1 cases
- [Hidden/submerged object](https://openairdocs.org/ntsb-findings/03022052) (Environmental issues): 1 cases
- [Spar (on wing)](https://openairdocs.org/ntsb-findings/01035711) (Aircraft): 1 cases
- [Bulkheads (main fuselage)](https://openairdocs.org/ntsb-findings/01035312) (Aircraft): 1 cases

## Newest cases

- [NTSB ENG24LA012](https://openairdocs.org/ntsb/ENG24LA012), Mar 1, 2024: British Aerospace BAE 146 Series 200A (N474NA), Missoula, MT, incident, minor damage. Probable cause: The use of a new long term fire retardant with a chemical composition incompatible with the retardant previously in use for the integration-operational field evaluation without adequate testing and…
- [NTSB DCA11FA004](https://openairdocs.org/ntsb/DCA11FA004), Oct 27, 2010: Boeing 757-223 (N626AA), Miami, FL, substantial damage. Probable cause: Fatigue failure of the fuselage crown skin due to incorrect manufacturing of the crown skin panel that resulted in a skin thickness less than the manufacturer-specified thickness.
- [NTSB DCA09FA065](https://openairdocs.org/ntsb/DCA09FA065), Jul 13, 2009: Boeing 737 (N387SW), Charleston, WV, substantial damage. Probable cause: Fuselage skin failure due to preexisting fatigue at a chemically milled step.
- [NTSB CHI08CA298](https://openairdocs.org/ntsb/CHI08CA298), Aug 23, 2008: Lake LA-4 (N1147L), Algonac, MI, substantial damage. Probable cause: The amphibious airplane's collision with submerged debris during taxi for takeoff, and the resulting damage to the hull.

NTSB has coded findings and defining events since 2008; earlier cases used its older occurrence and cause codes and aren't counted.

Findings: https://openairdocs.org/ntsb-findings.md. Defining events: https://openairdocs.org/ntsb-events.md. Phases of flight: https://openairdocs.org/ntsb-phases.md. Every investigation, filtered by finding, event, phase, state, year or model: https://openairdocs.org/ntsb.md (for example ?state=MI&fatal=1).

NTSB's definitions: Accident and incident, 49 CFR 830.2 (https://www.ecfr.gov/current/title-49/subtitle-B/chapter-VIII/part-830/subpart-A/section-830.2), CICTT occurrence categories (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/OccurrenceCategoryDefinitions.pdf), CICTT phases of flight (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/PhaseofFlightDefinitions.pdf), and NTSB coding manual, before 2008 (PDF) (https://www.ntsb.gov/GILS/Documents/codman.pdf). NTSB publishes no definitions for its findings, only their names.

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