Verified IPC identity record

AIR45474

Hydraulic pressure valve

Direct answer

AIR45474 is a hydraulic pressure valve with inconsistent nomenclature in the reviewed IPC. Figure 29-10-05-25 calls it a pressure-maintaining valve, while Figure 29-10-05-50 calls it a pressure-monitoring valve. Both rows direct spares requests to AIR45474-0, print quantity 1 and effectivity 8266-8999, and reference CMM 29-10-1123.

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.

AIR45474 verified catalog fields
Part numberAIR45474verified
Preferred nameHydraulic pressure valveverified
IPC nomenclatureValve, pressure maintaining; valve, monitoring pressureverified
SystemHydraulic powerverified
Primary ATA chapter29verified
Lookup variantsAIR-45474verified
AIR45474 catalog occurrences
Aircraft and publication scopeEffectivityFigure / itemQtyReview
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8266-8999 as printed in the IPC export29-10-05-25 / 3301verified
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8266-8999 as printed in the IPC export29-10-05-50 / 511verified

Cross-reference check

Relationships and limits.

  • Figure 29-10-05-25 names AIR45474 as a pressure-maintaining valve.
  • Figure 29-10-05-50 names AIR45474 as a pressure-monitoring valve and references drawing 25-8SF113.
  • Both rows direct spares requests to AIR45474-0 and reference CMM 29-10-1123.
Important limit

The two IPC names are carried forward as a source conflict. This page does not choose one description as technically superior or infer that two different valves share the number.

Mechanic's lookup notes

Common questions about AIR45474.

Is AIR45474 a pressure-maintaining or pressure-monitoring valve?

The supplied IPC uses both descriptions in different figures. The part number, replacement direction, quantity, effectivity, and CMM reference agree across the two rows.

What part number replaces AIR45474 for spares?

Both reviewed rows tell the reader to order AIR45474-0. Keep the original figure and nomenclature with the request so the source can resolve the configuration.

Which CMM is tied to AIR45474?

Both rows reference CMM 29-10-1123. The manual was not supplied for this page, so valve function, testing, and maintenance limits are not inferred.

Technical sources

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

    Document
    IPC-800XP
    Revision
    A0
    Published
    2026-02-05
    Supports
    Part identities, nomenclature, figure and item references, quantity, effectivity, and relationship language as printed in the supplied IPC export.