69-78533-2 - Boeing 737 Module Assy - Ice Detection System Logic for Boeing 737

69-78533-2 is an Ice Detection System logic module assembly for the Boeing 737, supplied by BAE Systems Controls, Inc. The module is the processing/logic Line Replaceable Unit (LRU) of the airframe ice-detection system: it interprets the signal from the aircraft's ice-detector probe(s) and provides ice-presence logic and indication used to alert the flight crew to icing conditions and, depending on configuration, to support anti-ice system management (ATA 30 — Ice and Rain Protection).

The '69-' prefix denotes a Boeing part number and the '-2' dash a specific configuration/revision; the applicable variant effectivity (737 Classic 300/400/500 versus 737 NG 600/700/800/900) should be confirmed against the 737 IPC. The unit is an avionics rotable installed in an electronics bay and is subject to functional test on installation. Mod and service-bulletin status should be checked so that the unit's configuration matches the receiving aircraft.

Avionics LRUs of this type are typically sourced overhauled (OH) or serviceable (SV) with FAA 8130-3 / EASA Form 1 and are testable on the bench against the applicable CMM; new units are available through Boeing distribution. Confirm the dash-number effectivity for the specific 737 variant before procurement.

Part Number: 69-78533-2
Manufacturer: BAE System Controls, Inc.
Aircraft Model: Boeing 737
Category: Avionics
Conditions Available: New / Overhauled / Serviceable / As-Removed — quoted per unit
Certification: FAA Form 8130-3 / EASA Form 1 available subject to source and condition
Price: Quoted per unit, condition, and trace documentation
Availability: Sourced on request — availability confirmed per RFQ, same-day response
Warranty: As per manufacturer
CAGE Code: 63760
NSN: 1680-01-688-3246

Key Specifications for 69-78533-2

ATA Chapter: 30 — Ice and Rain Protection
Part Type: Ice Detection System logic module (avionics LRU)
Aircraft: Boeing 737 (Classic/NG — verify against applicable IPC)
Manufacturer: BAE Systems Controls, Inc.
Typical Condition: Overhauled / Serviceable (rotable)

Procurement Notes for 69-78533-2

Source OH/SV with 8130-3 / EASA Form 1 and a functional-test record; confirm the 737 variant and dash effectivity plus mod/SB status against the IPC. No NSN or PMA cross-reference identified. Lead-time data not verified — confirm at time of quote.

Request a Quote for 69-78533-2

Aircraft Applicability for 69-78533-2

69-78533-2 (BAE System Controls, Inc.) is listed as applicable to the following Boeing 737 family variants. Confirm eligibility against the aircraft IPC / Type Certificate Data Sheet for the specific tail and configuration.

Boeing 737-200
Boeing 737-200C
Boeing 737-300
Boeing 737-400
Boeing 737-500
Boeing 737-700
Boeing 737-8
Boeing 737-800
Boeing 737-900ER

DoD Catalog Reference for 69-78533-2 (DLA / FLIS)

69-78533-2 is cataloged by the U.S. Defense Logistics Agency in the Federal Logistics Information System (FLIS) under National Stock Number 1680-01-688-3246, within Federal Supply Class 1680 — MISCELLANEOUS AIRCRAFT ACCESSORIES AND COMPONENTS. The DLA standardized item nomenclature for this component is “ICE DETECTION”.

The cataloged source of record (Commercial and Government Entity code 63760) is BAE SYSTEMS CONTROLS INC of FORT WAYNE, IN, UNITED STATES — an active manufacturer of record.

This catalog reference confirms 69-78533-2 as a recognized aerospace component in the DoD supply system and is provided here for traceability and procurement validation. Authoritative source: U.S. Defense Logistics Agency Federal Logistics Information System.

Frequently Asked Questions about 69-78533-2

What aircraft is 69-78533-2 used on?

The Boeing 737. Because the '-2' dash applies to specific effectivity, confirm the variant (737 Classic 300/400/500 vs 737 NG 600/700/800/900) and configuration against the IPC before treating another dash as equivalent.

What condition codes are available for 69-78533-2?

As an avionics rotable it is offered Overhauled (OH), Serviceable (SV), or As-Removed (AR); New (NE) is generally OEM-only. OH/SV units should include a functional-test record against the applicable CMM.

What certification documents ship with 69-78533-2?

FAA 8130-3 / EASA Form 1, dual release preferred. An airworthiness release is expected for an installed avionics LRU; a Certificate of Conformance alone is not normally sufficient.

Are there interchangeable part numbers for 69-78533-2?

No DLA FLIS / NSN cross-reference was identified. Interchangeability among dash numbers is governed by the Boeing IPC — verify the '-2' configuration against the IPC and the aircraft's mod/SB status before substituting another dash.

Can an ice-detection fault keep a 737 on the ground?

Depending on configuration and route, an ice-detection logic fault can drive Minimum Equipment List (MEL) restrictions on icing operations, so it can be dispatch-relevant. Confirm MEL relief for the specific configuration and keep a serviceable spare for AOG (Aircraft on Ground) resilience.

Aviation Industry Guides

Reference resources for buyers sourcing avionics components and verifying certification.

How to Verify FAA 8130-3 Airworthiness Certification on Aircraft Parts — The FAA 8130-3 Airworthiness Approval Tag is the primary document certifying that an aircraft part meets FAA airworthiness standards and is approved for install...
The Complete Guide to Aircraft Parts Sourcing in 2026 — Aircraft parts sourcing is the process of locating, evaluating, and procuring certified aviation components from OEMs, authorized distributors, MROs, and afterm...
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