Hawker 800XP 130530-4 to 130530-5 Cabin-Pressure Controller

Direct replacement path

The catalog relationship is straightforward:

130530-4 to 130530-5

The 130530-4 record tells the reader to order 130530-5 for spares. The 130530-5 record calls itself the spares replacement for 130530-4.

That wording repeats in all six matching application rows.

ATA 21 controller placements

Figure 21-30-05-13 contains two controller item stacks:

Item	Quantity	Catalog relationship
10	1	130530-4 orders forward to 130530-5
55	1	130530-4 orders forward to 130530-5

The item 55 row applies to a smaller printed serial group. Do not assume that both items apply to every airplane in the publication.

Why ATA 31 matters

The same two controller numbers appear in four ATA 31 instrument-panel figures:

• 31-10-05-60 item 140
• 31-10-05-60D item 95
• 31-10-05-60H item 123
• 31-10-05-65H item 570

Those rows preserve the same forward relationship. They also mark the 130530-5 replacement record as a unit exchange item.

This is useful when a search begins from a panel breakdown instead of the ATA 21 system installation. It does not create a second canonical part page or a different controller identity.

Quantity and effectivity

Every reviewed row prints quantity 1. The serial effectivity changes by figure and item.

Do not merge the serial lists into a simplified universal range. Use the exact row associated with the airplane and panel configuration. That is especially important around the small serial groups in the item 55 and 31-10-05-65H placements.

Exchange details to confirm

The IPC identifies unit-exchange status, but it does not provide commercial terms. Before accepting a quote, confirm:

• exact offered part number
• unit serial number
• condition and release
• core part-number eligibility
• core due date and late fees
• warranty
• modification or software status when applicable
• aircraft serial and installed panel configuration

A cheap exchange can turn expensive quickly when the removed core is not accepted under the quoted program.

What this guide does not provide

This guide does not state controller test procedures, pressure schedules, calibration limits, adjustment instructions, fault isolation, or return-to-service criteria.

Use the current applicable aircraft maintenance and component data for those tasks.