14 CFR § 171.73
Alternative forms of reports
July 13, 2020
On a case-by-case basis, a Regional Administrator may accept any report in a format other than the FAA form required by this part if he is satisfied that the report contains all the information required on the FAA form and can be processed by FAA as conveniently as the FAA form.
[Amdt. 171-5, 34 FR 15245, Sept. 30, 1969, as amended by Amdt. 171-15, 54 FR 39296, Sept. 25, 1989]