Hawker 800XP AIR48284 Relief-Valve Replacement Chain

The replacement chain as printed

All three relief-valve records appear at Figure 32-50-00-15, item 55. The catalog language makes a two-step forward chain:

1. AIR48284 says to order AIR48284-1 for spares.
2. AIR48284-1 is identified as the spares replacement for AIR48284 and says to order AIR48284-2 for spares.
3. AIR48284-2 is identified as the spares replacement for AIR48284-1. No later number is printed on its reviewed row.

The chain is more useful than a flat list of three similar numbers. It keeps the historical identity, intermediate replacement, and current printed destination in order.

The serial 8600 effectivity split

Part number	Effectivity printed in the export	Serial 8600 included?	Printed relationship
AIR48284	8266-8599, 8601-8999	No	Order AIR48284-1 for spares
AIR48284-1	8266-8599, 8601-8999	No	Replacement for AIR48284; order AIR48284-2
AIR48284-2	8266-8999	Yes	Replacement for AIR48284-1

Do not rewrite the first two ranges as 8266-8999. The missing serial is a real difference in the source data.

The source does not explain why AIR48284-2 has the continuous range. It may be tempting to infer a modification break or configuration change. That conclusion would go beyond the supplied evidence.

What remains the same across the family

Each record is identified as a relief-valve assembly. Each one appears at the same figure and item, prints quantity 1, and references CMM 29-10-1135. Those consistent fields support the family relationship.

They do not provide a relief setting, port assignment, test limit, overhaul status, or installed-unit approval. Those details belong in the applicable approved maintenance and component data.

How to handle an earlier number on the removed unit

If the data plate reads AIR48284 or AIR48284-1, keep that removed-unit identity on the request. Then show the IPC’s forward spares destination and ask for the exact offered number, condition, traceability, and release.

For aircraft serial 8600, do not use the earlier rows to establish application. AIR48284-2 is the only one of the three reviewed rows whose printed effectivity includes that serial. Current approved data still has to confirm the actual aircraft configuration.

Quote-request details that prevent rework

Include the following before accepting a relief-valve quote:

• removed-unit part and serial number
• aircraft model and full aircraft serial number
• requested part number after the forward spares check
• unit condition and release requirement
• modification and overhaul status shown by the source
• traceability and tag details
• core number and return terms if the quote is an exchange

The commercial listing can establish that a source is willing to quote or service a number. It cannot establish effectivity or installation approval.