Citation

81 FR 21505

Multiple canonical documents share this first-page citation.

Airworthiness Directives; Bombardier, Inc. Airplanes Tuesday, April 12, 2016 81 FR 21503
Airworthiness Directives; Bombardier, Inc. Airplanes Tuesday, April 12, 2016 81 FR 21503
Federal Register Vol. 81, No.70, April 12, 2016 Tuesday, April 12, 2016 81 FR 21505