AF Form 3591: 30 Year Length of Service Certificate

AF Form 3591: 30 Year Length of Service Certificate – eaching 30 years of federal service is a remarkable achievement that highlights unwavering commitment, expertise, and loyalty to the mission of the United States Air Force. The AF Form 3591, officially titled the United States Air Force 30 Year Length of Service Certificate, serves as the formal recognition for this significant career milestone, primarily for Department of the Air Force civilian employees.

This certificate, along with an accompanying service pin (NSN 8455-01-389-4393), is part of the Department of the Air Force Civilian Recognition Program. It honors the long-term contributions of dedicated civilians who support Air Force operations, readiness, and national security.

What Is AF Form 3591?

AF Form 3591 is a prescribed certificate used to recognize 30 years of creditable federal service. It is issued under Department of the Air Force Instruction (DAFI) 36-1004, which implements DoD guidance on civilian awards and recognition. A variant, AF Form 3591-1, exists specifically for foreign national employees (FNE).

These forms belong to a series of Length of Service (LOS) certificates that mark incremental milestones:

AF Form 3589 series: 10 years
AF Form 3590 series: 20 years
AF Form 3591 series: 30 years
AF Form 3592 series: 40 years
And higher increments up to 60 years or more.

For service exceeding 30 years, instructions sometimes recommend using wording like “long and distinguished career service” on appropriate certificates.

Who Qualifies for the AF Form 3591?

Eligibility focuses on Department of the Air Force civilian employees, including those in the Regular Air Force, Air Force Reserve, and Air National Guard components. Creditable service generally includes federal civilian employment, with specific rules for combining military and civilian time in certain retirement or recognition contexts.

30-Year Milestone: Recipients receive the AF Form 3591 certificate and the associated service pin.
Foreign National Employees: Receive AF Form 3591-1 and a pin.
Awards are typically presented during official Length of Service ceremonies or at retirement events.

Note that while military members have their own retirement and service recognition processes (such as retirement certificates), the AF Form 3591 series is part of the civilian honorary awards program. Similar recognition exists for other longevity milestones, and some bases or commands may hold combined ceremonies.

How to Obtain or Request the AF Form 3591?

The certificate is not a self-service form that individuals typically fill out themselves. Instead:

Unit or Civilian Personnel Flight (CPF) initiates the process based on service computation dates.
Supervisors or Human Resources personnel submit requests through command channels or the local awards program.
Approvals follow the guidance in DAFI 36-1004 (updated as of December 2023).
The official source for Air Force forms and publications is the Department of the Air Force e-Publishing website (www.e-publishing.af.mil). Search the product index for related forms and instructions.

Download Links (provided for reference; always verify the latest versions on the official e-Publishing site as forms and policies can be updated):

For the most current policy, refer to DoDI 1400.25 Volume 451 and its DAFI 36-1004 supplement, available on e-publishing.af.mil. Local Civilian Personnel Sections can provide guidance on nomination procedures, required documentation (such as SF-50 personnel actions), and presentation protocols.

Why Length of Service Recognition Matters

The Air Force Civilian Recognition Program, including the 30-year certificate, serves several important purposes:

Boosts Morale: Public acknowledgment of long-term service reinforces a culture of appreciation.
Retains Talent: Highlighting dedication encourages continued service and knowledge transfer.
Supports Mission Continuity: Civilians provide critical institutional knowledge in areas ranging from logistics and engineering to administration and intelligence support.

Many bases hold formal ceremonies where honorees receive their certificate and pin, often accompanied by remarks from leadership. These events celebrate not just years served, but the tangible impact on Air Force capabilities and national defense.

The LOS program is part of a broader recognition framework that includes:

Certificates of Achievement (DAF Form 3032)
Exemplary Civilian Service Award (DAF Form 3517)
Retirement certificates (DAF Form 342 series)
Various valor, meritorious, and exceptional service awards

Higher service milestones (40, 50, 60 years) have their own dedicated AF Forms in the 359x series.

Tips for Air Force Civilians Approaching Milestones

Track your Service Computation Date (SCD) accurately through your personnel records.
Coordinate early with your supervisor and Civilian Personnel Flight when approaching 20-, 30-, or higher-year marks.
Keep supporting documentation (SF-50s, prior awards) organized.
For retirees or separating employees, inquire about combined recognition that may include both LOS certificates and retirement awards.

Important: Policies and procedures can receive updates. Always consult the latest version of DAFI 36-1004 and your local HR guidance for the most accurate information.

Celebrating 30 Years of Service

The AF Form 3591 represents far more than a piece of paper—it symbolizes decades of contributions that help keep the United States Air Force strong, ready, and dominant. Whether you are a supervisor preparing to nominate a team member, a civilian approaching this milestone, or a family member supporting a loved one, this recognition honors the sacrifice, professionalism, and enduring commitment that define Air Force civilians.

For official details, visit the Air Force e-Publishing site and contact your local Civilian Personnel Section. They can assist with requests, ceremonies, and any questions about creditable service calculations.

This article is for informational purposes only and is based on publicly available Department of the Air Force publications as of the latest available guidance (2023–2025). Always verify current requirements through official channels.