# Recip eng front section

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft power plant](https://openairdocs.org/ntsb-findings/0105) › [Engine (reciprocating)](https://openairdocs.org/ntsb-findings/010585) › Recip eng front section
- NTSB code: 01058510
- Cases: 13
- In the probable cause: 12
- Fatal cases: 1
- All cases: https://openairdocs.org/ntsb-findings/01058510/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01058510/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01058510

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

- 2008: 2 / 2
- 2009: 1 / 1
- 2011: 2 / 2
- 2012: 1 / 1
- 2013: 1 / 1
- 2015: 1 / 1
- 2016: 1 / 1
- 2021: 2 / 2
- 2023: 0 / 1
- 2024: 1 / 1

## Defining events in these cases

- [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 8 cases
- [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 3 cases
- [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 2 cases

## Aircraft models (registry)

- [Snow 600-S2C](https://openairdocs.org/model/snow-600-s2c): 1 cases
- [Christen Industries PITTS S-1T](https://openairdocs.org/model/christen-industries-pitts-s-1t): 1 cases
- [Cessna 421C](https://openairdocs.org/model/cessna-421c): 1 cases
- [Cessna 182F](https://openairdocs.org/model/cessna-182f): 1 cases
- [Cessna 152](https://openairdocs.org/model/cessna-152): 1 cases
- [Cessna 120](https://openairdocs.org/model/cessna-120): 1 cases
- [Beech V35](https://openairdocs.org/model/beech-v35): 1 cases
- [Beech 23](https://openairdocs.org/model/beech-23): 1 cases
- [Remos REMOS GX](https://openairdocs.org/model/remos-remos-gx): 1 cases
- [William M Clapp CLAPP-SABERWING](https://openairdocs.org/model/william-m-clapp-clapp-saberwing): 1 cases

## Other findings in the same cases

- [Scheduled/routine maintenance](https://openairdocs.org/ntsb-findings/02062010) (Personnel issues): 2 cases
- [Oil](https://openairdocs.org/ntsb-findings/01071020) (Aircraft): 2 cases
- [Maintenance/inspections, general](https://openairdocs.org/ntsb-findings/01010500) (Aircraft): 2 cases
- [Not determined, general](https://openairdocs.org/ntsb-findings/05000000) (Not determined): 1 cases
- [Sloped/uneven terrain](https://openairdocs.org/ntsb-findings/03021017) (Environmental issues): 1 cases
- [Rough terrain](https://openairdocs.org/ntsb-findings/03021015) (Environmental issues): 1 cases
- [Terrain, general](https://openairdocs.org/ntsb-findings/03021000) (Environmental issues): 1 cases
- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 1 cases
- [Use of checklist](https://openairdocs.org/ntsb-findings/02063030) (Personnel issues): 1 cases
- [Installation](https://openairdocs.org/ntsb-findings/02062035) (Personnel issues): 1 cases

## Newest cases

- [NTSB ERA24LA258](https://openairdocs.org/ntsb/ERA24LA258), Jun 11, 2024: Clapp Saberwing (N120SW), Valdosta, GA, substantial damage. Probable cause: The total loss of engine power due to the shearing of the woodruff key that indexed the crankshaft gear and hub assembly to the crankshaft, which resulted in the gear and hub rotating from their…
- [NTSB WPR23LA160](https://openairdocs.org/ntsb/WPR23LA160), Apr 18, 2023: Remos Remos GX (N21GX), Glendale, AZ, substantial damage. Probable cause: A total loss of engine power caused by fatigue cracking and fracture of the crankshaft. Contributing to the accident was the operator’s failure to properly maintain the airplane.
- [NTSB CEN21LA401](https://openairdocs.org/ntsb/CEN21LA401), Sep 6, 2021: Bulfer James G Genesis (N105BJ), Fairmont, MN, substantial damage. Probable cause: The pilot’s failure to maintain airspeed during a forced landing, which resulted in the airplane exceeding its critical angle of attack and a subsequent aerodynamic stall. Contributing to the…
- [NTSB CEN21LA138](https://openairdocs.org/ntsb/CEN21LA138), Feb 24, 2021: Cessna 182F (N3209U), Millville, IA, substantial damage. Probable cause: The inadequate maintenance/inspection of the airplane, which resulted in a total loss of engine power due to oil starvation.
- [NTSB ANC17LA007](https://openairdocs.org/ntsb/ANC17LA007), Nov 22, 2016: Piper PA-18 (N83641), Bethel, AK, substantial damage. Probable cause: The mechanic's failure to install a whistle slot in the engine breather tube, which resulted in a frozen tube, displacement of the crankshaft oil seal, a loss of oil, and smoke in the cockpit, which…
- [NTSB ERA16LA041](https://openairdocs.org/ntsb/ERA16LA041), Nov 15, 2015: Woodrow Larry W Sonex (N7035Z), Morganton, NC, substantial damage. Probable cause: The pilot/owner’s inadequate maintenance inspection following a propeller strike, which resulted in the subsequent in-flight propeller separation due to propagation of fatigue cracks in the…
- [NTSB ERA13FA325](https://openairdocs.org/ntsb/ERA13FA325), Jul 18, 2013: Beech 23 (N2333Z), Laurel, MD, substantial damage. Probable cause: The pilot's inadequate preflight preparation of the airplane, which resulted in a total loss of engine power during takeoff and his decision to operate the unairworthy airplane.
- [NTSB ERA13FA082](https://openairdocs.org/ntsb/ERA13FA082), Dec 8, 2012: Cessna 421C (N297DB), Lake Worth, FL, substantial damage, 1 fatal. Probable cause: The pilot's failure to follow established engine-out procedures and to maintain a proper airspeed after the total loss of engine power on one of the airplane’s two engines during the initial climb.…
- [NTSB ERA11IA521](https://openairdocs.org/ntsb/ERA11IA521), Sep 18, 2011: Beech V35 (N275BM), New Haven, CT, incident, minor damage. Probable cause: The in-flight fatigue failure of the engine’s crankshaft, which resulted in the separation of the forward portion of the crankshaft and the propeller.
- [NTSB WPR11LA290](https://openairdocs.org/ntsb/WPR11LA290), Jun 26, 2011: Christen Industries Pitts S-1T (N77MN), Alkali Lake, OR, substantial damage. Probable cause: The loss of engine oil during cruise flight due to the failure of the front bearing oil seal.

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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