550-8 — TRANSFORMER,AUDIO FREQUENCY

550-8 is cataloged as TRANSFORMER,AUDIO FREQUENCY. It carries 2 NSN identities and cross-references to 11 related part numbers. FAA PMA approval is on file from Aviation Products Systems Inc. An estimated 329 aircraft of the approved type are registered in the US. The part appears on MCRL cross-reference data.

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NSN identities

NSN 000645460 — TRANSFORMER,AUDIO FREQUENCY
NSN 008913301 — FILTER,BAND PASS-LOW PASS

Approved sources (CAGE)

00136 MICROSEMI CORP. - HIGH PERFORMANCE TIMING · P/N 526-7727-008
56662 FREQUENCY SELECTIVE NETWORKS, INC. · P/N 730-5
00348 MICROTRAN CO INC · P/N M3569
15634 MAGNETIKA INC · P/N JR337
15634 MAGNETIKA INC · P/N SS0-8
15634 MAGNETIKA INC
1L8V1 MAGNETIKA INC · P/N SS0-8
28726 BULOVA TECHNOLOGIES L.L.C. DBA ENVIRONMENTAL SYSTEMS & SVCS
31550 L3HARRIS TECHNOLOGIES, INC. DBA HARRIS CORPORATION · P/N 2133245G1
56232 LOCKHEED MARTIN CORPORATION · P/N 1783947
96256 THORDARSON INC · P/N TR201
10001 NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER · P/N 2557874-8

Government purchase history

Distinct Vendors: 0
Total: $0.00
Total Amount: $0.00

Government pricing & management

Aac: J
Aac Label: Not stocked, centrally procured on demand
Effective Date: 2026-10-01
Moe: DN
Niin: 000645460
Qup: 1
Slc: 0
Sos: SMS
Sos Label: DLA
Ui: EA
Unit Price: $192.50

Demand

Buyer Requests 90d: 0
Buyer Requests All: 0
Open Solicitations: 0

Market on PartsAndPlanes

Active Listings: 0
Avg Price: $0.00
Max Price: $0.00
Min Price: 0
Sellers: 0
Total Quantity: 0

Availability

Band: Readily Available

Related part numbers

1783947, 2133245G1, 2557874-8, 526-7727-008, 730-5, CW12-847, F475-8, JR337, M3569, SS0-8, TR201

FAA-PMA

550-8 is an FAA-PMA part by Rockwell Collins Inc.

PMA PQ0390NM. Approved as a replacement for 5508 on McDonnell Douglas DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-9-15, DC-9-15F, DC-9-21, DC-9-31, DC-9-32, DC-9-32F, DC-9-33F, DC-9-34, DC-9-34F, DC-9-41, DC-9-51, DC-9-81, DC-9-82, DC-9-83, DC-9-87, MD-88 (Switch) · Current, Jun 2016.

The OEM numbers it replaces, and who sells those here

5508no listing here yet
MODIFICATIONPARTno listing here yet

1 FAA-PMA replacement part on file for 550-8

5508 Rockwell Collins Inc.· McDonnell Douglas DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-9-15, DC-9-15F, DC-9-21, DC-9-31, DC-9-32, DC-9-32F, DC-9-33F, DC-9-34, DC-9-34F, DC-9-41, DC-9-51, DC-9-81, DC-9-82, DC-9-83, DC-9-87, MD-88· Switch· Current, Jun 2016· no listing here yet

Sell any of these? List it free and this line names you, on this page and on the PMA part's own page.

A PMA part is approved for the specific eligibility listed on its FAA record; whether it may be installed on a particular aircraft, engine or component is the installer's determination. This page states the FAA record and the listings on PartsAndPlanes.