Verified IPC identity record

25HC31A

Hydraulic tank filter

Direct answer

25HC31A is a hydraulic filter shown at two tank-related placements: Figure 29-10-05-30 item 185 and Figure 29-20-05-10 item 30. Both rows print quantity 1 and effectivity 8266-8999.

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.

25HC31A verified catalog fields
Part number25HC31Averified
Preferred nameHydraulic tank filterverified
IPC nomenclatureFilterverified
SystemHydraulic powerverified
Primary ATA chapter29verified
Lookup variants25-HC-31-Averified
25HC31A catalog occurrences
Aircraft and publication scopeEffectivityFigure / itemQtyReview
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8266-8999 as printed in the IPC export29-10-05-30 / 1851verified
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8266-8999 as printed in the IPC export29-20-05-10 / 301verified

Cross-reference check

Relationships and limits.

  • Both reviewed rows use the same part number, quantity, and effectivity in different tank figures.
  • 25HC31A is not the same record as pressure filter 2125H4 or suction filter AIR87366-0.
Important limit

The same filter number appears in the main and emergency tank figures. The catalog rows do not provide element media, micron rating, cleaning limits, or proof that other filter assemblies are interchangeable.

Mechanic's lookup notes

Common questions about 25HC31A.

Where is 25HC31A used in the Hawker hydraulic system?

The IPC shows one in the main hydraulic tank figure and one in the emergency hydraulic tank figure.

Is 25HC31A interchangeable with 2125H4?

No interchange is printed. They are separate filter records at different figures and items.

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.