AIM Text
Pilots operating under reduced lateral separation must be particularly familiar with, and prepared to rapidly implement, the standard contingency procedures specifically written for operations when outside ATC surveillance and direct VHF communications (for example, the oceanic environment). Specific procedures have been developed for weather deviations. Operators should ensure all flight crews operating in this type of environment have been provided the standard contingency procedures in a readily accessible format. The margin for error when operating at reduced separation mandates correct and expeditious application of the standard contingency procedures. These internationally accepted procedures are published in ICAO Document 4444, chapter 15. The procedures are also reprinted in the U.S. Aeronautical Information Publication (AIP), En Route (ENR) Section 7.3, Special Procedures for In-flight Contingencies in Oceanic Airspace; and AC 91-70.
Source: FAA Aeronautical Information Manual · current edition · paragraph 4-7-6.
Research Notes
AIM 4-7-6 covers Flight Service Stations — services available beyond what's covered in AIM 4-1-3.
FSS services summary:
- Pilot weather briefings — Standard, Abbreviated, Outlook
- Flight plan filing — VFR, IFR, ICAO international flight plans
- EFAS — En-route Flight Advisory Service (Flight Watch — decommissioned 2015, services now via FSS on 122.2)
- HIWAS — Hazardous In-flight Weather Advisory Service (also decommissioned; weather is now via XM/ADS-B FIS-B)
- Search and rescue notification — overdue flight plan triggers SAR
- Notam dissemination — published in FSS briefings
- Airport advisory — at non-towered fields without UNICOM, FSS provides advisory service
Accessing FSS: 1-800-WX-BRIEF or 1800wxbrief.com. In flight: 122.2 MHz (most regions).