Appointments
A trainee may be appointed at any time during the grant budget period for an appointment period of 9 to 12 months (for T-activity codes that are not T35), without prior approval by the NIH awarding office.
The time period may be different for scholars appointed to institutional career development awards and participants appointed to research education awards.
At the time of the initial appointment and any subsequent reappointment, the training PD/PI must submit a Statement of Appointment to the NIH awarding office. The Statement of Appointment includes biographical and other information on the trainee and the stipend level for the period of appointment.
In addition to the Statement of Appointment, a signed Payback Agreement must be submitted for each postdoctoral trainee who is in his/her first 12 months of Kirschstein-NRSA postdoctoral support.
Quick Reference: https://www.era.nih.gov/files/Initiating%20an%20Appointment%20QRG.pdf
For more information concerning the 2271 form, refer to the Appendix A – Statement of Appointment (Form PHS 2271) topic.