OAS-74 Aircraft Modification Request

· DOI Office of Aviation Services

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Overview

The OAS-74 Aircraft Modification Request () is a public-domain DOI Office of Aviation Services aviation safety document, republished here as a free chaptered HTML edition with a linked table of contents and the official PDF.

Publisher: DOI Office of Aviation Services
Document
Pages: 1

Key points

The document is a request form for fleet aircraft equipment changes or modifications.
It includes sections for estimated costs, type of change, and required documentation.
Types of changes can include avionics equipment changes, minor alterations, and major alterations.
Required documentation includes a log book entry, FAA Form 337, and weight and balance information.
The form must be completed by the requesting agency and includes a section for OAS recommendations and approvals.

Frequently asked questions

What is the purpose of the OAS-74 form?

The OAS-74 form is used to request changes or modifications to fleet aircraft equipment.

What types of changes can be requested using this form?

The form allows for requests for avionics equipment changes, minor alterations, major alterations, and other types of changes.

What documentation is required for a modification request?

Required documentation includes a log book entry, FAA Form 337, weight and balance information, and any necessary supplements or placards.

Who needs to approve the modification request?

The modification request must be approved by the requesting agency and the Office of Aviation Services (OAS).

What information is needed regarding costs?

The form requires an estimation of costs for parts and materials as well as labor.

Document

United States Department of the Interior

Office of Aviation Services

300 E. Mallard Drive, Suite 200

Boise, Idaho 83706 - 3991

REQUEST FOR FLEET AIRCRAFT EQUIPMENT CHANGE OR MODIFICATION

Requested By: Requesting Agency: Date: Aircraft ‘N’ Number Aircraft Model: Purpose for Change: Description of Change: -ESTIMATED COST- Parts & Material Labor -TYPE CHANGE- Avionics Equipment Change Minor Alteration Major Alteration Other Approval Data: Manufacturer STC DER Other -REQUIRED DOCUMENTATION- Log Book Entry FAA Form 337 Field Approval Wt & Balance POH Supplement Placards -WORK TO BE PERFORMED BY- Facility Past Experience -OAS RECOMMENDATION & COMMENTS- -AGENCY & OAS APPROVAL- *Details of request and/or supporting documentation attached OAS-74 (12/12)