Commonly Used Airline Delay & Diversion Codes

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Commonly Used Airline Delay & Diversion Codes Page 1 of 4 Updated: 04 October 2004 For Notes and Disclaimers, plus a postscript please see page 4 - DIH Numeric Alphabetic Description Airline Internal Codes: 00 01 02 03 04 05 IATA has recommended that these codes are used by individual airlines to develop code definitions that meet their specific requirements: e.g. 03 "Three-class system" moving curtain. Note At time of writing the IATA Recommendation AHM 730 does NOT suggest any Alphabetic Equivalents for these codes Others: 06 OA NO GATE/STAND AVAILABILITY DUE TO OWN AIRLINE ACTIVITY Schedules 09 SG SCHEDULED GROUND TIME LESS THAN DECLARED MINIMUM GROUND TIME Passenger and Baggage 11 PD LATE CHECK-IN, acceptance after deadline 12 PL LATE CHECK-IN, congestion in check-in area 13 PE CHECK-IN ERROR, passenger and baggage 14 PO OVERSALES, booking errors 15 PH BOARDING, discrepancies and paging, missing checked-in passenger 16 PS COMMERCIAL PUBLICITY! PASSENGER CONVENIENCE, VIP, press, ground meals and missing personal items 17 PC CATERING ORDER, late or incorrect order given to supplier 18 PB BAGGAGE PROCESSING, sorting, etc. Cargo and Mail If delays caused by Mail handling can be identified use the Mail specific codes in the next section (27- 29), otherwise use the codes detailed below (21-26). 21 CD DOCUMENTATION, errors, etc 22 CP LATE POSITIONING 23 CC LATE ACCEPTANCE 24 CI INADEQUATE PACKING 25 CO OVERSALES, booking errors 26 CU LATE PREPARATION IN WAREHOUSE Mail Only 27 CE DOCUMENTATION, PACKING, etc 28 CL LATE POSITIONING 29 CA LATE ACCEPTANCE Aircraft and Ramp Handling 31 GD AIRCRAFT DOCUMENTATION LATE/INACCURATE, weight and balance, general declaration, pax manifest, etc. 32 GL LOADING/UNLOADING, bulky, special load, cabin load, lack of loading staff 33 GE LOADING EQUIPMENT, lack of or breakdown, e.g. container pallet loader, lack of staff 34 GS SERVICING EQUIPMENT, lack of or breakdown, lack of staff, e.g. steps 35 GC AIRCRAFT CLEANING 36 GF FUELLING/DEFUELLlNG, fuel supplier 37 GB CATERING, late delivery or loading 38 GU ULD, lack of or serviceability 39 GT TECHNICAL EQUIPMENT, lack of or breakdown, lack of staff, e.g. pushback Commonly Used Airline Delay & Diversion Codes Page 2 of 4 Updated: 04 October 2004 Numeric Alphabetic Description Technical and Aircraft Equipment 41 TD AIRCRAFT DEFECTS 42 TM SCHEDULED MAINTENANCE, late release 43 TN NON-SCHEDULED MAINTENANCE, special checks and/or additional works beyond normal maintenance schedule 44 TS SPARES AND MAINTENANCE EQUIPMENT, lack of or breakdown 45 TA AOG SPARES, to be carried to another station 46 TC AIRCRAFT CHANGE, for technical reasons 47 TL STANDBY AIRCRAFT, lack of planned standby aircraft for technical reasons 48 TV SCHEDULED CABIN CONFIGURATION VERSION ADJUSTMENTS Damage to Aircraft 51 DF DAMAGE DURING FLIGHT OPERATIONS, bird or lightning strike, turbulence, heavy or overweight landing, collision during taxying 52 DG DAMAGE DURING GROUND OPERATIONS, collisions (other than during taxying), loading/off-loading damage, contamination, towing, extreme weather conditions Automated Equipment Failure/EDP (Computer System) 55 ED DEPARTURE CONTROL 56 EC CARGO PREPARATION/DOCUMENTATION 57 EF FLIGHT PLANS Flight Operations and Crewing 61 FP FP FLIGHT PLAN, late completion or change of, flight documentation 62 FF OPERATIONAL REQUIREMENTS, fuel, load alteration 63 FT LATE CREW BOARDING OR DEPARTURE PROCEDURES, other than connection and standby (flight deck or entire crew) 64 FS FLIGHT DECK CREW SHORTAGE, sickness, awaiting standby, flight time limitations, crew meals, valid visa. health documents, etc 65 FR FLIGHT DECK CREW SPECIAL REQUEST, not within operational requirements 66 FL LATE CABIN CREW BOARDING OR DEPARTURE PROCEDURES, other than connection and standby 67 FC CABIN CREW SHORTAGE, sickness, awaiting standby, flight time limitations, crew meals, valid visa, health documents, etc 68 FA CABIN CREW ERROR OR SPECIAL REQUEST, not within operational requirements 69 FB CAPTAINS REQUEST FOR SECURITY CHECK, extraordinary Weather 71 WO WEATHER AT DEPARTURE STATION 72 WT WEATHER AT DESTINATION STATION 73 WR WEATHER EN ROUTE OR ALTERNATE 75 WI DE-ICING OF AIRCRAFT, removal of ice and/or snow, frost prevention excluding unserviceable equipment 76 WS REMOVAL OF SNOW, ICE, WATER AND SAND FROM AIRPORT 77 WG GROUND HANDLING IMPAIRED BY ADVERSE WEATHER CONDITIONS Commonly Used Airline Delay & Diversion Codes Page 3 of 4 Updated: 04 October 2004 Numeric Alphabetic Description Air Traffic Flow Management Restrictions 81 AT ATFM DUE TO ATC EN-ROUTE DEMAND/CAPACITY, standard demand/capacity problems 82 AX ATFM DUE TO ATC STAFF/ EQUIPMENT EN-ROUTE, reduced capacity caused by industrial action or staff shortage or equipment failure, extraordinary demand due to capacity reduction in neighbouring area 83 AE ATFM DUE TO RESTRICTION AT DESTINATION AIRPORT, airport and/or runway closed due to obstruction, industrial action, staff shortage, political unrest, noise abatement, night curfew, special flights 84 AW ATFM DUE TO WEATHER AT DESTINATION Airport and Governmental Authorities 85 AS MANDATORY SECURITY 86 AG IMMIGRATION, CUSTOMS, HEALTH 87 AF AIRPORT FACILITIES, parking stands, ramp congestion, lighting, buildings, gate limitations, etc 88 AD RESTRICTIONS AT AIRPORT OF DESTINATION, airport and/or runway closed due to obstruction, industrial action, staff shortage, political unrest, noise abatement, night curfew, special flights 89 AM RESTRICTIONS AT AIRPORT OF DEPARTURE WITH OR WITHOUT ATFM RESTRICTIONS, including Air Traffic Services, start-up and pushback, airport and/or runway closed due to obstruction or weather (restriction due to weather in case of AFTM regulation only, else refer to code 71 (WO», industrial action, staff shortage, political unrest, noise abatement, night curfew, special flights Reactionary 91 RL LOAD CONNECTION, awaiting load from another flight 92 RT THROUGH CHECK-IN ERROR, passenger and baggage 93 RA AIRCRAFT ROTATION, late arrival of aircraft from another flight or previous sector 94 RS CABIN CREW ROTATION, awaiting cabin crew from another flight 95 RC CREW ROTATION, awaiting crew from another flight (flight deck or entire crew) 96 RO OPERATIONS CONTROL, rerouting, diversion, consolidation, aircraft change for reasons other than technical Miscellaneous 97 MI INDUSTRIAL ACTION WITHIN OWN AIRLINE 98 MO INDUSTRIAL ACTION OUTSIDE OWN AIRLINE, excluding ATS 99 MX NOT COVERED BY ANY OF OTHER DEFINED CODES. If after confirming that the problem cannot be identified by us of any of the codes in the above list, then a summary of the problem MUST be included in the SI (Supplementary Information) element of any despatched message Commonly Used Airline Delay & Diversion Codes Page 4 of 4 Updated: 04 October 2004 Notes and Disclaimers: a) Although this document conforms to the delay and diversion codes (with minor expansion, or spelling changes to the descriptions) approved by the Airport Handling Committee for publication in January 1999, THIS IS NOT an Official IATA Document. The only official list is that contained in the current Airport Handling Manual, or other IATA/ Documentation containing recommendation AHM 730 b) This document as posted on www.cue-dih.co.uk may not therefore conform to the latest AHM 730 and should only be used for illustrative purposes c) Although Alphabetic versions of the Code scheme remain valid, NUMERIC CODES have been adopted as the PRIMARY CODE SCHEME and gradually the Alphabetical scheme will be of historical interest only. d) IATA recognise that as some codes provide an umbrella description of the problem, it is recommended that SI (Supplementary Information) element of messages is used to clarify code ambiguities e) Although IATA members can submit requests for changes or, additions to the AHM 730 Code List for consideration at anytime. IATA policy is once a changed list is published there will be a minimum of three years before another update is promulgated (at time of writing no change has been made in 5 years). Following publication of a change my experience is that many airlines may not adopt the change immediately and others may, after review continue using a previous version of the recommendation f) Although outside of the USA almost all Airlines base their Delay and Diversion codes on AHM 730 there are variations that apply to individual Airlines, either as in the case of this document minor changes in the descriptive text (to assist staff to more easily identify the code to be used), or more radical departures from the definition of a code. Other Airlines have their own codes within the recommendations categories where there is currently available space in that categories sequence e.g. applying a numeric code 60 for Crew being required to change Aircraft. IATA is concerned about these variations and general non-conformance and the following statement is part of the introduction to AHM 730: The standardisation of codes used for this purpose is essential for commonality in EDP systems, uniform agency handling, exchange of information, statistical comparison and management analysis. There are already cases where Carriers have defined for their own purposes, unused numeric codes which are then defined with a completely different meaning in the next issue of the recommendation. As all their computer systems and training now uses the non-standard code, they continue to use their now non conforming Code List, to the confusion of Handling Agencies everywhere. g) Some airlines internally use alpha suffixes to AHM 730 codes, post operation. This is because they find some codes too general in describing a problem and once the investigation is complete they want to refine the cause for reporting and statistical purposes. The use of such suffixes against AHM 730 Codes is unique to the individual Carrier concerned and even companies contracted to perform Ground Handling are not made aware of these suffixes. h) In the USA many carriers have evolved Code Schemes and definitions which are so different from the IATA recommendations that even correlation of their coding scheme with AHM 730 is difficult. In addition some US Carriers have different coding schemes for Delay and Diversion i) One coding scheme that IATA has published a correlation table for is the Codes used by Eurocontrol Central Flow Management Unit (CFMU) and this now forms part of AHM 730 EOE Postscript This is the third time I have prepared a list which conforms to the IATA Recommendation AHM 730 for Codes for use in Messages where reasons for Delay, or Diversion are required. The first time in the late 1980’s was specifically as part of the material for giving a course. The second combined the course usage with a means of providing a Plastic Covered Quick Reference for Ramp Dispatch and Control Centres for the Airline I was then consulting for. Amazingly copies of this version still surface from time to time (14 Years later)! The reason for doing this yet again was primarily to provide a Quick Reference for the people I work with to check off against customer implementation and variations on AHM 730 prior to pre-delivery database build. Douglas Holland 04th October 2004

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Commonly Used Airline Delay & Diversion Codes