# Fuel additive

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Fluids/misc hardware](https://openairdocs.org/ntsb-findings/0107) › [Fluids](https://openairdocs.org/ntsb-findings/010710) › Fuel additive
- NTSB code: 01071040
- Cases: 4
- In the probable cause: 4
- Fatal cases: 2
- All cases: https://openairdocs.org/ntsb-findings/01071040/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01071040/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01071040

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

- 2009: 1 / 1
- 2019: 1 / 1
- 2021: 1 / 1
- 2023: 1 / 1

## Defining events in these cases

- [Fuel contamination](https://openairdocs.org/ntsb-events/193): 2 cases
- [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 1 cases
- [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 1 cases

## Aircraft models (registry)

- [Pilatus PC-12/45](https://openairdocs.org/model/pilatus-pc-12-45): 1 cases
- [Gates Learjet 35A](https://openairdocs.org/model/gates-learjet-35a): 1 cases
- [Bolstridge Wallace R SKY RAIDER 1](https://openairdocs.org/model/bolstridge-wallace-r-sky-raider-1): 1 cases
- [Bradshaw S/Mccauley J G202](https://openairdocs.org/model/bradshaw-s-mccauley-j-g202): 1 cases

## Other findings in the same cases

- [Lack of action](https://openairdocs.org/ntsb-findings/02041030) (Personnel issues): 2 cases
- [Performance/control parameters, general](https://openairdocs.org/ntsb-findings/01062000) (Aircraft): 2 cases
- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 1 cases
- [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 1 cases
- [Preflight inspection](https://openairdocs.org/ntsb-findings/02061510) (Personnel issues): 1 cases
- [Fuel](https://openairdocs.org/ntsb-findings/01071010) (Aircraft): 1 cases
- [Indicating/recording systems, general](https://openairdocs.org/ntsb-findings/01023100) (Aircraft): 1 cases
- [Fuel pumps](https://openairdocs.org/ntsb-findings/01022822) (Aircraft): 1 cases
- [Passenger compartment equip](https://openairdocs.org/ntsb-findings/01022520) (Aircraft): 1 cases
- [Placards and markings, general](https://openairdocs.org/ntsb-findings/01011100) (Aircraft): 1 cases

## Newest cases

- [NTSB WPR23LA167](https://openairdocs.org/ntsb/WPR23LA167), Apr 24, 2023: Gates Learjet 35A (N135SH), Page, AZ, occurrence, no damage. Probable cause: The fueler’s inadvertent addition of diesel exhaust fluid (DEF) to the FSII reservoir on the fuel truck, and its subsequent mixture with the JET A that was used to fuel the airplane, resulting in a…
- [NTSB WPR21LA234](https://openairdocs.org/ntsb/WPR21LA234), Jun 22, 2021: Bolstridge Wallace R SKY Raider 1 (N8010B), Nampa, ID, substantial damage. Probable cause: A total loss of engine power due to the pilot’s failure to premix the two-cycle oil/gasoline mixture, which resulted in a forced landing in a field and collision with terrain.
- [NTSB ANC19FA021](https://openairdocs.org/ntsb/ANC19FA021), May 30, 2019: Bradshaw / McCauley Giles G-202 (N202AK), Wasilla, AK, substantial damage, 1 fatal. Probable cause: The pilot's failure to maintain control after the partial loss of engine power. Contributing to the accident was a contamination of the fuel system, which likely seized the electric fuel pump and…
- [NTSB WPR09MA159](https://openairdocs.org/ntsb/WPR09MA159), Mar 22, 2009: Pilatus PC-12/45 (N128CM), Butte, MT, substantial damage, 14 fatal. Probable cause: (1) the pilot's failure to ensure that a fuel system icing inhibitor was added to the fuel before the flights on the day of the accident; (2) his failure to take appropriate remedial actions after a…

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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