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


The accumulator uses its stored air pressure to give emergency brake pressure in the event of loss of hydraulic system A and B pressure. It can provide six full brake applications - even if all hydraulic power is lost. If you should get into that situation just apply the brakes and hold them on, donít cycle or pump the brakes because you only get six applications. The accumulators also dampen pressure surges and assure instantaneous flow of fluid to the brakes regardless of other hydraulic demands. There are two brake accumulators on the -1/200, one for inboard brakes & one for outboard brakes and just one on all later series.

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*** Updated 18 Apr 2019 ***

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Accumulator servicing point - 737

Found on the rear wall of the wheel well on the stbd side, the pressure gauge measures air from the air side of the accumulator and should read approximately 3000psi. Note the accumulator is hidden on the NG's.

Accumulator servicing point - 737NG

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