# Enroute - Type: NTSB phase of flight (CICTT main phase) - CICTT code: 400 - Cases: 35873 - Fatal cases: 9802 - In the older codes (1982 to 2007): 13740 - All cases: https://openairdocs.org/ntsb-phases/400/cases.md - Page: https://openairdocs.org/ntsb-phases/400 ## Cases per year (current codes / all) - 1962: 18 / 18 - 1963: 28 / 28 - 1964: 703 / 703 - 1965: 750 / 750 - 1966: 856 / 856 - 1967: 893 / 893 - 1968: 881 / 881 - 1969: 995 / 995 - 1970: 996 / 996 - 1971: 941 / 941 - 1972: 894 / 894 - 1973: 935 / 935 - 1974: 968 / 968 - 1975: 977 / 977 - 1976: 927 / 927 - 1977: 936 / 936 - 1978: 1,018 / 1,018 - 1979: 968 / 968 - 1980: 873 / 873 - 1981: 881 / 881 - 1982: 0 / 786 - 1983: 0 / 734 - 1984: 0 / 747 - 1985: 0 / 704 - 1986: 0 / 693 - 1987: 0 / 616 - 1988: 0 / 656 - 1989: 0 / 590 - 1990: 0 / 548 - 1991: 0 / 574 - 1992: 0 / 542 - 1993: 0 / 533 - 1994: 0 / 498 - 1995: 0 / 506 - 1996: 0 / 511 - 1997: 0 / 466 - 1998: 0 / 467 - 1999: 0 / 452 - 2000: 0 / 451 - 2001: 0 / 396 - 2002: 0 / 407 - 2003: 0 / 415 - 2004: 0 / 380 - 2005: 0 / 390 - 2006: 0 / 325 - 2007: 0 / 353 - 2008: 255 / 255 - 2009: 309 / 309 - 2010: 269 / 269 - 2011: 287 / 287 - 2012: 309 / 309 - 2013: 280 / 280 - 2014: 258 / 258 - 2015: 295 / 295 - 2016: 324 / 324 - 2017: 275 / 275 - 2018: 340 / 340 - 2019: 348 / 348 - 2020: 248 / 248 - 2021: 323 / 323 - 2022: 311 / 311 - 2023: 322 / 322 - 2024: 368 / 368 - 2025: 347 / 347 - 2026: 227 / 227 ## CICTT sub-phases (1962 to 1981, 2008 on) - Enroute-cruise (402): 12,767 cases - Enroute-change of cruise level (403): 2,973 cases - Enroute (400): 2,341 cases - Enroute-climb to cruise (401): 2,017 cases - Enroute-descent (404): 2,013 cases - Enroute-holding (IFR) (405): 22 cases ## Older codes counted here (1982 to 2007) - Cruise (540): 5,182 cases - Cruise - normal (541): 4,944 cases - Climb - to cruise (531): 1,123 cases - Descent - normal (551): 951 cases - Climb (530): 876 cases - Descent (550): 645 cases - Maneuvering - holding (IFR) (542): 19 cases ## Defining events in this phase (2008 on) - [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 1,211 cases - [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 460 cases - [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 436 cases - [Fuel exhaustion](https://openairdocs.org/ntsb-events/192): 402 cases - [Unknown or undetermined](https://openairdocs.org/ntsb-events/000): 336 cases - [Controlled flight into terr/obj (CFIT)](https://openairdocs.org/ntsb-events/120): 317 cases - [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 299 cases - [Turbulence encounter](https://openairdocs.org/ntsb-events/360): 271 cases - [Fuel starvation](https://openairdocs.org/ntsb-events/191): 205 cases - [VFR encounter with IMC](https://openairdocs.org/ntsb-events/401): 171 cases ## In the probable cause (2008 on) - [Fuel](https://openairdocs.org/ntsb-findings/01071010): 691 cases - [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): 582 cases - [Not determined, general](https://openairdocs.org/ntsb-findings/05000000): 543 cases - [Aircraft control](https://openairdocs.org/ntsb-findings/02063040): 403 cases - [Fuel planning](https://openairdocs.org/ntsb-findings/02061030): 356 cases - [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015): 233 cases - [Altitude](https://openairdocs.org/ntsb-findings/01062012): 221 cases - [Performance/control parameters, general](https://openairdocs.org/ntsb-findings/01062000): 195 cases - [Recip eng cyl section](https://openairdocs.org/ntsb-findings/01058530): 192 cases - [Engine (reciprocating), general](https://openairdocs.org/ntsb-findings/01058500): 157 cases ## Aircraft models (registry, all years) - [Piper PA-28-140](https://openairdocs.org/model/piper-pa-28-140): 644 cases - [Cessna 152](https://openairdocs.org/model/cessna-152): 585 cases - [Piper PA-28-180](https://openairdocs.org/model/piper-pa-28-180): 480 cases - [Piper PA-24-250](https://openairdocs.org/model/piper-pa-24-250): 350 cases - [Cessna 150L](https://openairdocs.org/model/cessna-150l): 338 cases - [Cessna 150M](https://openairdocs.org/model/cessna-150m): 323 cases - [Cessna 172N](https://openairdocs.org/model/cessna-172n): 310 cases - [Cessna 150F](https://openairdocs.org/model/cessna-150f): 296 cases - [Piper PA-28R-200](https://openairdocs.org/model/piper-pa-28r-200): 270 cases - [Cessna 150G](https://openairdocs.org/model/cessna-150g): 260 cases ## Newest cases - [NTSB CEN27LA029](https://openairdocs.org/ntsb/CEN27LA029), Oct 22, 2026: Piper PA-28 (N5393W), Claremore, OK, investigation ongoing - [NTSB DCA27LA019](https://openairdocs.org/ntsb/DCA27LA019), Oct 21, 2026: Boeing 777-222 (N769UA), Pacific Ocean (Pacific Ocean), investigation ongoing - [NTSB CEN27LA024](https://openairdocs.org/ntsb/CEN27LA024), Oct 19, 2026: Eurocopter Deutschland EC 135 P2 (N3842), St. Louis, MO, investigation ongoing - [NTSB DCA27WA018](https://openairdocs.org/ntsb/DCA27WA018), Oct 16, 2026: Boeing 767 (CC-CWV), Chalhuanca, Peru, incident - [NTSB CEN27FA016](https://openairdocs.org/ntsb/CEN27FA016), Oct 14, 2026: Piper PA 46-350P (N931TT), Reedsburg, WI, 5 fatal, investigation ongoing - [NTSB CEN27LA017](https://openairdocs.org/ntsb/CEN27LA017), Oct 13, 2026: Donald K Stovall Pietenpol Aircamper (N728MK), Syracuse, KS, investigation ongoing - [NTSB DCA27LA014](https://openairdocs.org/ntsb/DCA27LA014), Oct 12, 2026: Boeing 777 (G-VIIT), Orlando, FL, occurrence, no damage, investigation ongoing - [NTSB WPR27FA014](https://openairdocs.org/ntsb/WPR27FA014), Oct 11, 2026: Piper PA-18-150 (N927JS), Aeneas, WA, 2 fatal, investigation ongoing - [NTSB CEN27LA011](https://openairdocs.org/ntsb/CEN27LA011), Oct 9, 2026: Flight Design Ctls (N792CT), Yankton, SD, substantial damage, investigation ongoing - [NTSB DCA27WA009](https://openairdocs.org/ntsb/DCA27WA009), Oct 9, 2026: Airbus A320-214 (N207FR), Kingston, Jamaica, incident From 1962 to 1981 and from 2008 on, NTSB codes phases with the CICTT phases; from 1982 to 2007 with its older phase codes, counted under the CICTT main phase each maps to. Each case counts once, on its first aircraft: by its defining event's phase from 2008, its first event's before 1982, and its first occurrence's from 1982 to 2007. Compare years within an era: a first occurrence (1982 to 2007) is often in flight, before the landing, so landings count lower then. 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. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.