# Indicating/recording systems

- Type: NTSB finding section
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft systems](https://openairdocs.org/ntsb-findings/0102) › Indicating/recording systems
- NTSB code: 010231
- Cases: 79
- In the probable cause: 48
- Fatal cases: 28
- All cases: https://openairdocs.org/ntsb-findings/010231/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/010231/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/010231

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

- 2008: 0 / 1
- 2009: 3 / 9
- 2010: 6 / 8
- 2011: 1 / 4
- 2012: 1 / 2
- 2013: 3 / 5
- 2014: 2 / 5
- 2015: 3 / 5
- 2016: 2 / 4
- 2017: 5 / 7
- 2018: 4 / 4
- 2019: 6 / 7
- 2020: 1 / 3
- 2021: 1 / 2
- 2022: 2 / 2
- 2023: 4 / 6
- 2024: 4 / 5

## Findings

- [Instrument panel](https://openairdocs.org/ntsb-findings/01023110): 22 cases, 17 in the probable cause
- [Indicating/recording systems, general](https://openairdocs.org/ntsb-findings/01023100): 18 cases, 9 in the probable cause
- [Data recorders (flight/maint)](https://openairdocs.org/ntsb-findings/01023130): 17 cases, 3 in the probable cause
- [Central warning](https://openairdocs.org/ntsb-findings/01023150): 9 cases, 8 in the probable cause
- [Indep instrument (clock, etc)](https://openairdocs.org/ntsb-findings/01023120): 6 cases, 5 in the probable cause
- [Instrument wiring](https://openairdocs.org/ntsb-findings/01023197): 3 cases, 2 in the probable cause
- [Central display](https://openairdocs.org/ntsb-findings/01023160): 2 cases, 2 in the probable cause
- [Automatic data](https://openairdocs.org/ntsb-findings/01023170): 2 cases, 2 in the probable cause
- [Central computers (e.g. EICAS)](https://openairdocs.org/ntsb-findings/01023140): 1 cases, 0 in the probable cause

## Defining events in these cases

- [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 21 cases
- [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 8 cases
- [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 6 cases
- [VFR encounter with IMC](https://openairdocs.org/ntsb-events/401): 5 cases
- [Collision during takeoff/land](https://openairdocs.org/ntsb-events/490): 4 cases
- [Flight instrument malf/fail](https://openairdocs.org/ntsb-events/334): 3 cases
- [Electrical system malf/failure](https://openairdocs.org/ntsb-events/332): 3 cases
- [Runway excursion](https://openairdocs.org/ntsb-events/300): 3 cases
- [Birdstrike](https://openairdocs.org/ntsb-events/901): 2 cases
- [Miscellaneous/other](https://openairdocs.org/ntsb-events/900): 2 cases

## Aircraft models (registry)

- [Robinson Helicopter R44 II](https://openairdocs.org/model/robinson-helicopter-r44-ii): 3 cases
- [Dehavilland DHC-3](https://openairdocs.org/model/dehavilland-dhc-3): 2 cases
- [Cirrus Design SR22](https://openairdocs.org/model/cirrus-design-sr22): 2 cases
- [Cessna 177B](https://openairdocs.org/model/cessna-177b): 2 cases
- [Amazon.Com Services MK30](https://openairdocs.org/model/amazon-com-services-mk30): 2 cases
- [Pzl-Swidnik PW-5](https://openairdocs.org/model/pzl-swidnik-pw-5): 1 cases
- [Eurocopter AS 350 B2](https://openairdocs.org/model/eurocopter-as-350-b2): 1 cases
- [Airbus Helicopters EC 130B4](https://openairdocs.org/model/airbus-helicopters-ec-130b4): 1 cases
- [Sikorsky S-76C](https://openairdocs.org/model/sikorsky-s-76c): 1 cases
- [Sikorsky S-76B](https://openairdocs.org/model/sikorsky-s-76b): 1 cases

## Other findings in the same cases

- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 21 cases
- [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 17 cases
- [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 11 cases
- [Airspeed](https://openairdocs.org/ntsb-findings/01062010) (Aircraft): 11 cases
- [Identification/recognition](https://openairdocs.org/ntsb-findings/02041510) (Personnel issues): 7 cases
- [Incorrect action performance](https://openairdocs.org/ntsb-findings/02041015) (Personnel issues): 7 cases
- [Adequacy of policy/proc](https://openairdocs.org/ntsb-findings/04021015) (Organizational issues): 6 cases
- [Lack of action](https://openairdocs.org/ntsb-findings/02041030) (Personnel issues): 6 cases
- [Not determined, general](https://openairdocs.org/ntsb-findings/05000000) (Not determined): 5 cases
- [Oversight of operation](https://openairdocs.org/ntsb-findings/04032015) (Organizational issues): 5 cases

## Newest cases

- [NTSB WPR25LA064](https://openairdocs.org/ntsb/WPR25LA064), Dec 16, 2024: Amazon.Com Services MK30 (N223PA), Pendleton, OR, substantial damage. Probable cause: The incorrect altitude indication by test software during landing.
- [NTSB WPR25LA063](https://openairdocs.org/ntsb/WPR25LA063), Dec 16, 2024: Amazon.Com Services MK30 (N209PA), Pendleton, OR, substantial damage. Probable cause: An improper altitude indication from a recent software update, which resulted in a loss of engine power in flight.
- [NTSB WPR24LA265](https://openairdocs.org/ntsb/WPR24LA265), Aug 3, 2024: Bell 407 (N20BH), Raft River, ID, substantial damage. Probable cause: The pilot’s misdiagnosis of an erroneous engine instrument indication and his subsequent decision to enter an autorotation, which resulted in a hard landing due to degraded visual cues and low…
- [NTSB CEN24LA318](https://openairdocs.org/ntsb/CEN24LA318), Jun 20, 2024: Ayres S2R (N4004K), Stanwood, MI, substantial damage. Probable cause: The pilot’s failure to maintain terrain clearance during a low-level aerial application flight, which resulted in impact with terrain and a subsequent forced landing. Contributing to the accident was…
- [NTSB CEN24MA111](https://openairdocs.org/ntsb/CEN24MA111), Feb 10, 2024: Airbus Helicopters EC 130 (N130CZ), Halloran Springs, CA, destroyed, 6 fatal. Probable cause: The pilot’s decision to continue the visual flight rules flight into instrument meteorological conditions, which resulted in the pilot’s spatial disorientation and loss of control. Contributing to…
- [NTSB CEN23FA359](https://openairdocs.org/ntsb/CEN23FA359), Aug 12, 2023: Vans RV14 (N6161), Virden, IL, substantial damage, 1 fatal. Probable cause: The pilot/builder’s improper configuration of the canopy latch micro switch, which incorrectly signaled a closed canopy before flight that resulted in an inflight opening of the airplane’s canopy, an…
- [NTSB WPR23LA306](https://openairdocs.org/ntsb/WPR23LA306), Aug 5, 2023: Boeing CH-46E (N461WY), Springerville, AZ, destroyed. Probable cause: The flight crew’s misidentification of a No. 2 torque sensing system signal conditioner malfunction when both engines were performing normally, which resulted in their attempt to execute a…
- [NTSB CEN23LA135](https://openairdocs.org/ntsb/CEN23LA135), Mar 14, 2023: Bell Helicopter Textron APT70 (N314AL), Mineral Wells, TX, substantial damage. Probable cause: The flight crew’s loss of control of the unmanned aircraft due to software limitations. Contributing to the accident was the overly restrictive low voltage threshold limits.
- [NTSB CEN23LA130](https://openairdocs.org/ntsb/CEN23LA130), Mar 11, 2023: Robinson Helicopter R44 (N4164T), De Kalb, TX, substantial damage. Probable cause: The pilot’s inability to maintain control of the helicopter due to his failure to maintain rotor speed. Contributing to the accident was the failure of the helicopter’s low rotor speed warning system.
- [NTSB DCA23FA149](https://openairdocs.org/ntsb/DCA23FA149), Feb 4, 2023: Boeing 737-79P (N7827A), Austin, TX, incident, no damage. Probable cause: the local controller’s incorrect assumption that the Southwest Airlines (SWA) airplane would depart from the runway before the Federal Express airplane arrived on the same runway, which resulted in 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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