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Avionics

STC ST02451AT

FAA DRS lists ST02451AT as Current · Reissued, held by United States Navy Naval Air Systems Command Commercial Derivative Aircraft Program, for Boeing DC-9-32F. Recorded change: Installation of Colins FDS-255 EFIS, Collins WXR-700X predictive windshear weather radar and AlliedSignal enhanced ground proximity warning system. Snapshot dated June 30, 2026.

FAA-listed holder
United States Navy Naval Air Systems Command Commercial Derivative Aircraft Program
Aircraft configurations
1
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

ST02451AT identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.

Applicability

Aircraft named in FAA DRS

Named aircraft: Boeing DC-9-32F. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing DC-9-32FA6WE

Buyer checks

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Related avionics STCs

SA3036WE-DAvionics

Modifies aircraft to install dual Delco C-IV Inertial Navigation Systems (INS) for attitude and direction reference, navigation, and auto-pilot steering. Also adds a Sperry DG-207 Directional Gyro in the Aux position and Azimuth switching capability. The VG-DG racks are replaced by the INS Navigation units in the above configuration, but the modification permits replacing the INS Navigation units with VG-DG racks to provide triple VG-DG for attitude and direction reference only. The installation is in accordance with DAS-1-WE Approved United Air Lines Drawing List No. COA 3-2023, dated March 22, 1977, or later FAA approved revisions. United Air Lines FAA Approved Flight Manual Supplement to McDonnell Douglas Flight Manual Document Number MDC-J1010 dated February 17, 1977, or later FAA approved revision is required as part of this installation.

FAA holder: United Airlines Inc

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SA3038WE-DAvionics

Installation of dual Collins FD-109 Flight Director System in accordance with master list of drawings and related documents for United Air Lines Change Order Authorization No. 2-4950 dated April 27, 1977 or later FAA approved revision. Each system consists of one each of the following components. Roll computer P/N 522-4428-008, Pitch Computer P/N 522-4892-008, Instrument Amplifier P/N 522-3874-005, Control Panel P/N 522-4431-001, Horizon Flight Director Indicator P/N 522-4430-002, Course Deviation\nIndicator P/N 522-2782-004, Pitch Mode Annunciator P/N R2901-159 and Roll Mode Annunciator P/N R2901-160. The Boeing DC-8-61 FAA Approved Aircraft Flight Manual DAC-33161 has been reviewed and no revision is required as a result of this change.

FAA holder: United Airlines Inc

View record