Systems by ATA Chapter
This module covers every design difference in the FSB table from the 737-800 to the 737-8 that is not dealt with elsewhere. The airframe items are in module 2, engines (ATA 72 to 80) in module 3, displays (ATA 31), the gear lever and the FMC (ATA 34) in module 4, and autoflight and flight controls (ATA 22 and 27) in module 5. Levels are training/checking as defined in module 1, and "procedure change" means the FSB marks the item as changing a procedure. The NG side comes from the FSB's reverse table (737-8 to 737-800) and, where stated, from the 737 NG FCOM.
Almost everything here is Level A or B: new lights, renamed switches and relocated controls. What matters is the number of small changes to annunciator names, colours and positions that an NG pilot's eyes and hands are trained to.
- ATA 21 Air conditioning
- ATA 24 Electrical power
- ATA 26 Fire protection
- ATA 28 Fuel
- ATA 29 Hydraulic power
- ATA 30 Ice and rain protection
- ATA 31 Warnings outside the displays
- ATA 32 Landing gear
- ATA 34 Navigation and FMS
- ATA 36 Pneumatics
- ATA 49 APU
- Alerting philosophy
- Other MAX variants
- Key differences
ATA 21 Air conditioning
- Pack flow control: the MAX has an electronic pack flow control system; the FSB calls the NG's a simplified version (B/B).
- PACK light: revised logic (A/A, procedure change).
- Equipment cooling: an EQUIP SMOKE light and smoke detection system are added (B/B, procedure change). The NG has neither.
- Option: 737-8 and 737-9 aircraft modified by Boeing service bulletin 737-21-1217 (lower cabin altitude) can hold a 6,500 ft cabin at 41,000 ft instead of the standard 8,000 ft (EASA TCDS). Check whether your fleet has it.
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- The MAX Family and Your Type RatingThe 737 MAX models, why they share the B-737 type rating with the NG, the FAA differences levels A to E and what they require from NG to MAX, where the Appendix 7 special training fits, and the facts of the 2019 to 2020 grounding.MODULE 1 · 7 MIN READ
- Airframe, Dimensions and WeightsWhat changes on the outside of the MAX and on paper: engines, winglets, nose gear, tailskid and tail lights, dimensions, exits and seating by model, certified weights, and the altitude, speed and other limits in the type certificate.MODULE 2 · 7 MIN READ
- EnginesThe CFM LEAP-1B that replaces the NG's CFM56-7B: engine models in the type certificate, why the installation matters, the EEC, indication, alert and thrust reverser changes the FSB lists, thrust setting, starting and limitations.MODULE 3 · 6 MIN READ
- Flight Deck and DisplaysThe MAX Display System's four large screens against the NG's six display units, display formats and switching, the engine display control panel, EFIS panel, PFD and standby instruments, the two-position landing gear lever, and the FMC and CDU changes.MODULE 4 · 6 MIN READ
- Flight Controls, MCAS and Stabiliser TrimThe fly-by-wire spoilers and their new functions, how MCAS works after the 2020 return-to-service update, and the changes to speed trim, stabiliser trim, STAB OUT OF TRIM and AOA DISAGREE, with the FSB level for each.MODULE 5 · 7 MIN READ
- Systems by ATA ChapterThe remaining design differences in the FSB table from the 737-800 to the 737-8, grouped by ATA chapter with their training and checking levels, then the flight deck and procedure differences between the 737-8 and the 737-7, 737-9 and 737-8200.MODULE 6 · 6 MIN READ
- Procedures and Special TrainingWhat changes in normal and non-normal procedures on the 737 MAX, the special ground and simulator training of FSB Appendix 7, and the additional requirements EASA set for the return to service.MODULE 7 · 7 MIN READ
- Quick ReferenceOne side-by-side table of the main differences between the 737-800 and the 737-8 with their FSB training and checking levels, then a revision list of the facts and figures to know.MODULE 8 · 5 MIN READ
Sources
- FAA Flight Standardization Board Report, Boeing 737, Revision 17 (November 2020)
- FAA Flight Standardization Board Report, Boeing 737, Revision 21 (draft)
- Summary of the FAA's Review of the Boeing 737 MAX (November 2020)
- EASA Boeing 737 MAX Return to Service Report (January 2021)
- EASA Type Certificate Data Sheet IM.A.120, Boeing 737 (Issue 29, December 2025)
Difference Training on v1prep is for study, interview and exam preparation. It does not replace your operator's approved differences training, your AFM, FCOM and QRH, or the regulators' documents, which always govern.