Verified IPC identity record

25HC161AD

Emergency hydraulic tank assembly

Direct answer

25HC161AD is the emergency hydraulic tank assembly. The IPC shows it at Figure 29-20-05-10, item 10 for effectivity 8266-8374 and at Figure 29-20-05-05, item 75 as the detail reference for effectivity 8266-8999. Both rows print quantity 1.

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.

25HC161AD verified catalog fields
Part number25HC161ADverified
Preferred nameEmergency hydraulic tank assemblyverified
IPC nomenclatureTank assembly, emergencyverified
SystemHydraulic powerverified
Primary ATA chapter29verified
Lookup variants25.HC161A/D, 25HC161D, 25-HC-161-ADverified
25HC161AD catalog occurrences
Aircraft and publication scopeEffectivityFigure / itemQtyReview
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8266-8374 as printed in the IPC export29-20-05-10 / 101verified
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8266-8999 as printed in the IPC export29-20-05-05 / 751verified

Cross-reference check

Relationships and limits.

  • The item-10 application ends at effectivity 8374 and is followed by 25-1H15275-3A.
  • A second row carries 25HC161AD across 8266-8999 as a for-details-see reference, so the two rows serve different catalog purposes.
Important limit

The all-effectivity detail-reference row does not erase the item-10 change to 25-1H15275-3A at effectivity 8375. Use the exact figure purpose and aircraft configuration when resolving the number.

Mechanic's lookup notes

Common questions about 25HC161AD.

Why does 25HC161AD have two effectivity statements?

One row is the item-10 tank assembly through 8374. The other is an all-effectivity detail-reference row in the broader emergency equipment installation.

What tank assembly appears at item 10 from effectivity 8375?

The IPC changes the item-10 tank assembly to 25-1H15275-3A.

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.