• § 90.401 - Scope.

• § 90.403 - General operating requirements.

• § 90.405 - Permissible communications.

• § 90.407 - Emergency communications.

• § 90.411 - Civil defense communications.

• § 90.415 - Prohibited uses.

• § 90.417 - Interstation communication.

• § 90.419 - Points of communication.

• § 90.421 - Operation of mobile station units not under the control of the licensee.

• § 90.423 - Operation on board aircraft.

• § 90.425 - Station identification.

• § 90.427 - Precautions against unauthorized operation.

• § 90.429 - Control point and dispatch point requirements.

• § 90.431 - Unattended operation.

• § 90.433 - Operator requirements.

• § 90.437 - Posting station licenses.

• § 90.439 - Inspection of stations.

• § 90.441 - Inspection and maintenance of antenna structure marking and associated control equipment.

• § 90.443 - Content of station records.

• § 90.445 - Form of station records.

• § 90.447 - Retention of station records.