Verified IPC identity record

23491-3

Main aircraft battery

Direct answer

The IPC identifies 23491-3 as the ZM and ZN battery, with quantity 2 across five rows in Figures 24-30-05-20, 24-30-05-20C, and 24-50-05-21. Each row has its own printed serial effectivity. Concorde manufacturer eligibility material separately identifies RG-390E as an approved two-battery replacement path for 23491 or 23491-3 on Hawker 800 and 800XP aircraft under STC ST00415LA.

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.

23491-3 verified catalog fields
Part number23491-3verified
Preferred nameMain aircraft batteryverified
IPC nomenclatureBattery, ZM and ZNverified
SystemElectrical powerverified
Primary ATA chapter24verified
Lookup variants234913, 23491/3, 23491 3verified
23491-3 catalog occurrences
Aircraft and publication scopeEffectivityFigure / itemQtyReview
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8266-8266 as printed in the IPC export24-30-05-20 / 752verified
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8277-8277,8279-8279,8283-8284,8401-8401,8421-8421,8434-8434,8447-8447 as printed in the IPC export24-30-05-20 / 752verified
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8477-8477,8508-8508,8524-8524,8541-8541 as printed in the IPC export24-30-05-20C / 502verified
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8277-8444,8447-8447,8459-8459,8470-8470,8477-8477,8501-8501,8508-8508,8524-8524,8541-8541 as printed in the IPC export24-50-05-21 / 3752verified
Hawker 800XP, 850XP, and 900XP with kit 140-9004 publication scope8266-8266 as printed in the IPC export24-50-05-21 / 3752verified

Cross-reference check

Relationships and limits.

  • Every reviewed 23491-3 row prints quantity 2 for the ZM and ZN battery positions.
  • The IPC rows use several disjoint effectivity blocks and do not print a direct replacement statement.
  • Concorde eligibility material separately identifies RG-390E as the two-battery STC replacement path for 23491 or 23491-3 on Hawker 800 and 800XP aircraft.
Important limit

The IPC effectivity is split across several figures and does not itself call RG-390E a replacement. The RG-390E path comes from separate STC eligibility material and requires the applicable approved installation data.

Mechanic's lookup notes

Common questions about 23491-3.

How many 23491-3 batteries are installed?

The reviewed IPC rows print quantity 2 for the ZM and ZN positions. Confirm the applicable aircraft configuration before treating that as an installation instruction.

Does RG-390E replace 23491-3?

Concorde manufacturer eligibility material says its STC ST00415LA installs two RG-390E batteries in place of 23491 or 23491-3 on Hawker 800 and 800XP aircraft. Use the approved STC data for the actual installation.

Why does 23491-3 have several effectivity lists?

The number appears in multiple installation and panel figures, and each catalog row carries its own serial block. Those blocks should not be compressed into a universal fit statement.

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.
  2. Aircraft Eligibility ListConcorde Battery Corporation

    Document
    STC ST00415LA / FAA-PMA eligibility list
    Revision
    EL-92
    Published
    2023-10-01
    Supports
    RG-390E eligibility for Hawker 800 and 800XP aircraft and the stated STC path for replacing two 23491 or 23491-3 nickel-cadmium batteries.