Verified IPC identity record

695-4-21

Brake pressure transducer

Direct answer

The IPC identifies 695-4-21 as a transducer in the wheel-brake piping breakdown at ATA 32, Figure 32-40-20-10, item 30. It lists two units per assembly, effectivity 8266-8999, and the codes AW and AU. A commercial cross-reference to 695-4-27 was found, but that relationship is not verified by the supplied IPC.

Last source review:

IPC record

Identity and application.

The reviewed catalog row establishes the part identity and its location in the combined Hawker IPC. It does not establish the condition of a particular unit or approve that unit for installation.

695-4-21 verified catalog fields
Part number695-4-21verified
Preferred nameBrake pressure transducerverified
IPC nomenclatureTransducer, AW, AUverified
SystemLanding gear and brakesverified
Primary ATA chapter32verified
Lookup variants695.4.21, 695421verified
695-4-21 catalog occurrences
Aircraft and publication scopeEffectivityFigure / itemQtyReview
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8266-8999 as printed in the IPC export32-40-20-10 / 302verified

Cross-reference check

Relationships and limits.

  • The IPC lists two 695-4-21 transducers at Figure 32-40-20-10, item 30.
  • The row prints the codes AW and AU but the supplied export does not define them.
  • A supplier page directs users to 695-4-27. That cross-reference is not present in the reviewed IPC and is not treated as approved here.
Important limit

The IPC does not define AW and AU or list 695-4-27 as an alternate or replacement. Treat any supplier cross-reference to 695-4-27 as unverified until approved data supports it.

Mechanic's lookup notes

Common questions about 695-4-21.

How many 695-4-21 transducers are listed in the IPC?

The reviewed row lists two units per assembly at Figure 32-40-20-10, item 30, for effectivity 8266-8999.

Is 695-4-27 an approved replacement for 695-4-21?

That cannot be confirmed from the supplied IPC. One commercial page directs users to 695-4-27, but approved technical data must establish any replacement relationship.

Which number formats should be searched for 695-4-21?

Use the printed 695-4-21 first. Some listings use 695.4.21 or remove punctuation, but formatting variations are not separate approved part numbers.

Technical sources

  1. Hawker 800XP, 850XP and 900XP Illustrated Parts CatalogTextron Aviation

    Document
    IPC-800XP
    Revision
    A0
    Published
    2026-02-05
    Supports
    695-4-21 identity, nomenclature, 32-40-20-10 item 30, quantity, and effectivity as printed in the supplied export.