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Illustrated technical information covering Vol 2 Over 800 multi-choice systems questions Close up photos of internal and external components Illustrated history and description of all variants of 737 Databases and reports of all the major 737 accidents & incidents History and Development of the Boeing 737 - MAX General flightdeck views of each generation of 737's Technical presentations of 737 systems by Chris Brady Detailed tech specs of every series of 737 A collection of my favourite photographs that I have taken of or from the 737 Press reports of orders and deliveries Details about 737 production methods A compilation of links to other sites with useful 737 content Study notes and technical information A compilation of links to major 737 news stories with a downloadable archive A quick concise overview of the pages on this site



Centre Inst Panel differences from prototype to MAX here

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*** Updated 14 Nov 2021 ***

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737 MAX

The MAX Display System (MDS) squeezes four 15.1 inch LCD cockpit display screens in landscape orientation across the instrument panels. This leaves just enough room for a new slimline gear lever and standby flight instruments. All the rest of the controls or displays that were here on the NG have either been integrated into the MDS or moved down to the Forward Aisle Stand where the lower DU was previously located.

737 NG

The NG engine instruments are normally displayed on the center forward panel upper and lower display units. The choice of gauges displayed is a customer option.. Many NG's operators choose to have most of the parameters hidden after engine start. If an abnormality arises, it will automatically display thereby alerting the crew to the problem.


Most of the 737-3/4/500's had this Engine Instrument System (EIS) primary and secondary panel made by Smiths Industries. The primary panel had the usual N1, EGT, N2 and Fuel flow/used. The secondary panel had the oil pressure, temperature and quantity (digital only), vibration and also included the hydraulic pressure and quantity (digital only) from the F/O's instrument panel.

Early 737-300

This "Round Dial" 737-300 is distinguishable from a -1/200 by not having an EPR gauge and the inclusion of a vibration gauge. The hydraulic quantity and pressure gauges are still outboard of the gear lever.



The 737-1/200 had JT8D engines, placarded here as -9A's. EPR was used for power settings instead of N1 and the panel on the right is where EPR was set for the autothrottle along with A/T mode - CRZ / CLIMB / CONT / GA. The sequence of primary engine instruments was: EPR, N1, EGT, N2, Fuel flow. The secondary instruments were oil pressure, oil temperature, oil quantity. Notice that there was no vibration gauge and the hydraulic pressure gauge was to the right of the gear lever. The Reverser Unlocked lights were grouped with the other engine warnings.

The two INOP stickers are for the GRAVEL PROTECT lights which blew bleed air from a probe ahead of the engine cowl to stop vortices lifting debris into the engine. See unpaved strip kit.



Even older is this 727-200Adv panel with N1, EPR, EGT, N2, FF and no oil or hydraulic gauges.