# Localizer

- Type: NTSB finding subsection
- Path: [Environmental issues](https://openairdocs.org/ntsb-findings/03) › [Operating environment](https://openairdocs.org/ntsb-findings/0301) › [Approach aid coverage/avail](https://openairdocs.org/ntsb-findings/030120) › Localizer
- NTSB code: 03012020
- Cases: 3
- In the probable cause: 3
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/03012020/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/03012020/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/03012020

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

- 2009: 1 / 1
- 2018: 1 / 1
- 2019: 1 / 1

## Defining events in these cases

- [Wrong surface or wrong airport](https://openairdocs.org/ntsb-events/284): 2 cases
- [Miscellaneous/other](https://openairdocs.org/ntsb-events/900): 1 cases

## Aircraft models (registry)

- [Embraer EMB-145XR](https://openairdocs.org/model/embraer-emb-145xr): 1 cases
- [Boeing 767-332](https://openairdocs.org/model/boeing-767-332): 1 cases

## Other findings in the same cases

- [Taxiway markings/signage](https://openairdocs.org/ntsb-findings/03017040) (Environmental issues): 1 cases
- [Taxiway lighting](https://openairdocs.org/ntsb-findings/03017020) (Environmental issues): 1 cases
- [Surface/taxi](https://openairdocs.org/ntsb-findings/03015010) (Environmental issues): 1 cases
- [Approach lighting](https://openairdocs.org/ntsb-findings/03012015) (Environmental issues): 1 cases
- [Expectation/assumption](https://openairdocs.org/ntsb-findings/02041525) (Personnel issues): 1 cases
- [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 1 cases
- [Identification/recognition](https://openairdocs.org/ntsb-findings/02041510) (Personnel issues): 1 cases
- [Lack of action](https://openairdocs.org/ntsb-findings/02041030) (Personnel issues): 1 cases
- [Delayed action](https://openairdocs.org/ntsb-findings/02041025) (Personnel issues): 1 cases
- [Incorrect action selection](https://openairdocs.org/ntsb-findings/02041010) (Personnel issues): 1 cases

## Newest cases

- [NTSB DCA19FA089](https://openairdocs.org/ntsb/DCA19FA089), Mar 4, 2019: Embraer EMB145 (N14171), Presque Isle, ME, substantial damage. Probable cause: The flight crew’s decision, due to confirmation bias, to continue the descent below the decision altitude when the runway had not been positively identified. Contributing to the accident were (1) the…
- [NTSB OPS18IA015](https://openairdocs.org/ntsb/OPS18IA015), Jun 21, 2018: Boeing 747 (B-18711), Chicago, IL, incident, no damage. Probable cause: Interference with the localizer signal resulting in a Multipath condition experienced by CAL5148 while conducting an ILS CAT III (autoland) approach. This condition resulted in a runway excursion and…
- [NTSB OPS10IA001](https://openairdocs.org/ntsb/OPS10IA001), Oct 19, 2009: Boeing 767 (N185DN), Atlanta Hartsfield Intl. Apt. (KATL), GA, incident, no damage. Probable cause: The flight crew’s failure to identify the correct landing surface due to fatigue. Contributing to the cause of the incident were (1) the flight crew’s decision to accept a late runway change, (2) the…

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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