Verified IPC identity record

130156-2

Cabin-pressure check valve

Direct answer

The IPC lists 130156-2 as a Mod 25G172B check-valve assembly in two ATA 21 rows. Figure 21-30-05-20A explicitly calls it the spares replacement for 130156-1. Both rows print quantity 2 and reference CMM 21-30-58.

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.

130156-2 verified catalog fields
Part number130156-2verified
Preferred nameCabin-pressure check valveverified
IPC nomenclatureValve assembly, check, Mod 25G172B, spares replacement for 130156-1verified
SystemAir conditioning and pressurizationverified
Primary ATA chapter21verified
Lookup variants1301562, 130156 2verified
130156-2 catalog occurrences
Aircraft and publication scopeEffectivityFigure / itemQtyReview
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8266-8277,8279-8279,8283-8284,8401-8401,8421-8421,8434-8434,8447-8447 as printed in the IPC export21-30-05-20A / 2502verified
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8278-8278,8280-8282,8285-8400,8402-8420,8422-8433,8435-8445,8448-8999 as printed in the IPC export21-30-05-20B / 2802verified

Cross-reference check

Relationships and limits.

  • The Figure 21-30-05-20A row calls 130156-2 the spares replacement for 130156-1.
  • Both rows print Mod 25G172B, quantity 2, and CMM 21-30-58.
  • The effectivity is divided between the 20A and 20B figures.
Important limit

The replacement record is split across two figure-specific serial blocks. Confirm the installed upper or lower position, aircraft serial, Mod 25G172B status, and current approved data.

Mechanic's lookup notes

Common questions about 130156-2.

Is 130156-2 the replacement for 130156-1?

Yes. Figure 21-30-05-20A explicitly identifies 130156-2 as the spares replacement for 130156-1.

What quantity is printed for 130156-2?

Both reviewed rows print quantity 2 for the applicable assembly.

Does 130156-2 appear in both installation figures?

Yes. It appears in Figure 21-30-05-20A item 250 and Figure 21-30-05-20B item 280 with separate serial blocks.

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.