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OAS-110 Travel Cost Analysis

· DOI Office of Aviation Services · 2026

Public domain · DOI Office of Aviation ServicesAviation Safety Documents

Overview

The OAS-110 Travel Cost Analysis () 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
Year
2026
Pages
3

Key points

  • The document outlines the justification for using government aircraft for travel, including required data and cost analysis.
  • Travel cost analysis includes comparisons of commercial airline costs, leased aircraft, and DOI-operated aircraft.
  • Hourly salary rates for travelers are calculated using annual salary divided by 2087 hours, multiplied by 1.20 to cover fringe benefits.
  • Approval requirements for travel on government aircraft must be completed by designated officials, including special requirements for senior officials and non-federal travelers.
  • Cost comparisons must include total duty hours, per diem, ground transportation, and any additional aircraft costs.
Frequently asked questions
What is the purpose of the OAS-110 document?

The OAS-110 document provides a framework for analyzing travel costs associated with the use of government aircraft.

How is the hourly salary rate for travelers calculated?

The hourly salary rate is calculated by dividing the annual salary by 2087 hours and multiplying by 1.20 to account for average fringe benefits.

What types of costs are compared in the travel cost analysis?

The analysis compares costs of commercial airline travel, leased or rented aircraft, and DOI-operated aircraft, including various associated expenses.

Who needs to approve travel on government aircraft?

Travel on government aircraft requires approval from designated officials, and special approvals are needed for certain categories of travelers.

What additional costs should be considered in the DOI-operated aircraft section?

Additional costs may include variable crew costs, fuel costs, tiedown fees, overnight parking, and any other costs not included in the flight hour rate.

Document

OAS-110 (11/25)

TRAVEL COST ANALYSIS

Justification for use of a Government aircraft for travel: A. BASIC DATA: Dates and time of required time(s) at Temporary Duty Station(s) (TDS): Location __________________ Date ______________ Hours required to be on site _________ to _________ Location __________________ Date ______________ Hours required to be on site _________ to _________ Location __________________ Date ______________ Hours required to be on site _________ to _________ Manifest (only persons required to be at TDS): Name & Title Senior FED Non- Hourly Salary Off/SES Fed Annual Salary ÷ 2087 hours x 1.20 = Hourly Salary Rate NOTE: 1.20 covers average Fringe Benefits, Retirement, Health & Life Insurance, Medicare, other Fringes.

The 1.20 does not include COLA; for Alaska-based employees, add the applicable additional %.

TOTAL Hours Cost of All Required Travelers $ _ _____________________________

( Continue on attached sheet if needed )

B. COST COMPARISON: 1. Commercial Airline Costs to meet the required TDS locations and times. Individual ticket cost x number of required travelers. $ _____ ______________ • Cost of total duty hours away from office or regular duty station to meet the commercial airline schedule.

________ ___________ • Cost of required per diem and ground transportation.

________ ___________ $ ___________________ TOTAL Cost by commercial transportation 2. Leased, Contract, or Rental Aircraft.

$ _____ ______________ 1. Flight hours x flight hour costs ________ ___________ 2. Cost of total duty hours away from office or regular duty station ________ ___________ 3. Cost of required per diem and ground transportation ________ ___________ 4. Any additional aircraft or crew costs not included in above hourly rate, i.e., standby charges, tiedown fees, overnight parking, extra crew, etc.

$ ________ ___________ TOTAL Cost by Lease, Contract, or Rental aircraft.

3. DOI –Operated Aircraft – identify specific aircraft : ____ ________________________ $ ________ ___________ • Flight hours required x variable flight hour cost.

________ ___________ • Cost of total duty hours away from office or regular duty station.

________ ___________ • Cost of required per diem and ground transportation.

___________________ • Any additional costs to be incurred that are not included in the above flight hour rate. Variable cost of crew, as defined on page 1 of OMB Circular A-126, Attachment B, if not included in the flight hour rate. (Do not include pilot costs here if the pilot is one of the Government officials required to meet or perform duties at the TDY location.)

______ ____________ • Fuel costs, if not included in above flight hour rate. Any additional aircraft costs not in the above flight hour rate, i.e., tiedown fees, overnight parking, et.

$ ______ ____________ TOTAL COST by DOI Fleet aircraft.

C. MOST COST-EFFECTIVE METHOD:

 Commercial

 Lease, Contract or Rental – N# _____ ______________. Pilot/Crew _ _________________________________________________________________ Purpose _ __________________________________________________________________________________________  DOI Fleet ----------------------N# ____ _______________. Pilot/Crew _________________________________________________________________ Purpose _ __________________________________________________________________________________________ REMARKS: ( Must be completed if other than most-cost-effective method is chosen .)

D. GENERAL APPROVAL REQUIREMENTS FOR TRAVEL ON GOVERNMENT AIRCRAFT: _____________________________________________ _____________________________________________ ____ ______________ Print name of designated approving official Signature Date E. SPECIAL APPROVAL REQUIREMENTS FOR REQUIRED USE TRAVEL: (See paragraph 11.b. page 6 of OMB Circular A-126) _____________________________________________ _____________________________________________ ____ ______________ Print name of designated approving official Signature Date F. SPECIAL APPROVAL REQUIREMENTS FOR USE OF GOVERNMENT AIRCRAFT FOR TRAVEL BY THE FOLLOWING CATEGORIES OF PEOPLE: (See paragraph 11.c. page 7 of OMB Circular A-126 and paragraph a., page 3-1 of OMB Bulletin No. 93-11) 1) Senior Executive Branch Officials 2) Senior Federal Officials 3) Members of Families of Senior Executive Branch and Senior Federal Officials 4) Non-Federal travelers _____________________________________________ _____________________________________________ __________________ Print name of designated approving official Signature Date Manifest (continued): Name & Title Senior FE D No n- Hourly Salary d Off/SES Fe ______________________________ TOTAL Hours Cost of All Required Travelers $

Source & rights

Source: doi.gov. Public-domain U.S. Government work (17 USC §105) — freely reproducible.

Permanent URL — we don’t break links.

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Document details

Doc number
Publisher
DOI Office of Aviation Services
Year
2026
Pages
3
File size
219 KB