Field Reference

All positions are 1-indexed inclusive. Every record is exactly 200 bytes long.

Field offsets follow the official IATA SSIM, Chapter 7, §§ 7.5.1–7.5.5 (validated against the March 2011 and March 2012 editions). Changes introduced effective 1 October 2012 are flagged inline.

Type 1 — Header (§ 7.5.1)

Cols	Field	Property
1	Record type (1)	—
2–35	Title of Contents	title
36–40	Spare	—
41	Number of Seasons	numberOfSeasons
42–191	Spare	—
192–194	Data Set Serial Number	dataSetSerialNumber
195–200	Record Serial Number	recordSerialNumber

Type 2 — Carrier (§ 7.5.2)

Cols	Field	Property
1	Record type (2)	—
2	Time mode (U=UTC, L=local)	timeMode
3–5	Airline designator	airlineDesignator
6–10	Spare	—
11–13	Season	season
14	Spare	—
15–21	Period of Schedule Validity from	validFrom
22–28	Period of Schedule Validity to	validTo
29–35	Creation date	creationDate
36–64	Title of Data	titleOfData
65–71	Release (Sell) Date	releaseDate
72	Schedule Status (P/C)	scheduleStatus
73–107	Creator Reference	creatorReference
108	Duplicate Airline Designator Marker	duplicateAirlineDesignatorMarker
109–168	General Information	generalInformation
169	Secure Flight Indicator (eff. 1 Oct 2012)	secureFlightIndicator
170–188	In-Flight Service Information	inFlightServiceInformation
189–190	Electronic Ticketing Information	electronicTicketingInformation
191–194	Creation Time (HHMM)	creationTime
195–200	Record Serial Number	serialNumber

Type 3 — Flight Leg (§ 7.5.3)

Cols	Field	Property
1	Record type (3)	—
2	Operational suffix	operationalSuffix
3–5	Airline designator	airlineDesignator
6–9	Flight number (4N)	flightNumber
10–11	Itinerary variation identifier	itineraryVariationId
12–13	Leg sequence number	legSequenceNumber
14	Service type	serviceType
15–21	Period of operation from	periodFrom
22–28	Period of operation to	periodTo
29–35	Days of operation	daysOfOperation / daysOfOperationRaw
36	Frequency rate	frequencyRate
37–39	Departure station	departure.station
40–43	STD passenger (HHMM, local)	departure.stdPassenger
44–47	STD aircraft (HHMM, local)	departure.stdAircraft
48–52	UTC variation departure	departure.utcOffsetMinutes
53–54	Departure terminal	departure.terminal
55–57	Arrival station	arrival.station
58–61	STA aircraft	arrival.staAircraft
62–65	STA passenger	arrival.staPassenger
66–70	UTC variation arrival	arrival.utcOffsetMinutes
71–72	Arrival terminal	arrival.terminal
73–75	Aircraft type	aircraftType
76–95	PRBD	prbd
96–100	PRBM	prbm
101–110	Meal service note	mealServiceNote
111–119	Joint operation airline designators	jointOperationAirlines
120	MCT status (departure)	mctDeparture
121	MCT status (arrival)	mctArrival
122	Secure Flight Indicator	secureFlightIndicator
128	Itinerary variation overflow	itineraryVariationOverflow
129–131	Aircraft owner	aircraftOwner
132–134	Cockpit crew employer	cockpitCrewEmployer
135–137	Cabin crew employer	cabinCrewEmployer
138–140	Onward airline designator	onwardAirline
141–144	Onward flight number	onwardFlightNumber
145	Aircraft rotation layover	aircraftRotationLayover
146	Onward operational suffix	onwardOperationalSuffix
148	Flight transit layover	flightTransitLayover
149	Code share / wet-lease indicator	codeShareWetLease
150–160	Traffic restriction code	trafficRestrictionCode
161	TRC leg overflow indicator	trcOverflow
173–192	Aircraft configuration / version	aircraftConfiguration
193–194	Date variation	dateVariation
195–200	Record serial number	serialNumber

Type 4 — Segment Data (§ 7.5.4)

Cols	Field	Property
1	Record type (4)	—
2	Operational suffix	operationalSuffix
3–5	Airline designator	airlineDesignator
6–9	Flight number	flightNumber
10–11	Itinerary variation identifier	itineraryVariationId
12–13	Leg sequence number	legSequenceNumber
14	Service type	serviceType
28	IVI overflow	itineraryVariationOverflow
29	Board point indicator	boardPointIndicator
30	Off point indicator	offPointIndicator
31–33	DEI code	dataElementIdentifier
34–36	Board point	boardPoint
37–39	Off point	offPoint
40–194	DEI payload	data
195–200	Record serial number	serialNumber

Type 5 — Trailer (§ 7.5.5)

Cols	Field	Property
1	Record type (5)	—
2	Spare	—
3–5	Airline designator	airlineDesignator
6–12	Release (Sell) Date	releaseDate
13–187	Spare	—
188–193	Serial Number Check Reference	serialNumberCheckReference
194	Continuation/End Code (C/E)	continuationEndCode
195–200	Record Serial Number	recordSerialNumber

The trailer carries no record count — that field was a misconception in earlier informal docs. serialNumberCheckReference must equal the previous record's serial number for the file to be considered consistent.