08/14/2015 To Whom It May Concern This letter is to recommend Mr. Jeffrey Mayo Sr. as an aviation supervisor of exceptional caliber and merit. I have had the privilege of knowing Mr. Mayo for a few years and I can attest to the fact that he uses a high level of technical expertise along with management savvy to get the job done. When we last worked together, he was assigned to the NASA (JSC) T-38 Supersonic Jet Department inclusive of Phase/Unscheduled Maintenance, Launch and Recovery as the sole Maintenance Manager. During his tenure he had some tough objectives to accomplish. Phase maintenance was up to 5 months plus to completion and there was no cohesion between his unscheduled and scheduled maintenance teams. However, after establishing a morning and afternoon meeting with his teams, building a rapport with the mechanics and technicians, and working with Quality, Logistics, and other support teams, Mr. Mayo was able to determine what was working and what was not working. He started by working with the Maintenance, Quality, and Lean teams to get a better understanding of what was going on with scheduled maintenance and why it was taking so long to get an aircraft through its inspections. From information that was developed during value stream mapping sessions on scheduled maintenance, Mr. Mayo was able to know how many hours each job took during a major and minor phase inspections for a T-38. He used this knowledge to implement a plan that reduced aircraft turnaround time (TAT) in scheduled maintenance (the docks) from 5 months to 3.2 months and 3 months to 1.2 months for the major and minor inspections respectively. At the same time, by making some changes in leadership in unscheduled and flight line maintenance and increasing management oversight, he was also able to increase aircraft availability by 10%. These techniques as well as a willingness to be open to new ideas from the floor, cross training to reduce workload, and implementing a policy of fairness in assignments, improved morale and cohesion of his teams. Based on the overall improvement in performance that I saw in the T-38 docks, the unscheduled maintenance, and the flight line, I, Walter Terry, would recommend Mr. Jeffrey Mayo Sr. for any future posts as a regular full time Professional in a Supervisory/Management Position. He would be an asset to any Aviation team looking to improve. Walter F. Terry Quality and Process Improvement DynCorp International LLC at NASA (JSC) 12211 Brantley Avenue, Bldg. 267 Houston, Texas 77034 Office: 281-483-8930 Cell: 713-309-0780 Email: walter.f.terry@nasa.gov