Honorable Mr. Chairman. Distinguished Guests, It is a great pleasure for me, DGCA Indonesia, to have this opportunity to deliver a paper related standard for seaplane bases.
• This paper presents information related to seaplane base standards and recommended practices that not yet covered by ICAO annexes and documents.
• This paper is provided to urge States to recognize the importance of standard and recommended practices for seaplane bases (water bases) as well as airport and heliport.
Strategic Objectives: A: Safety – Enhance global civil aviation safety Global Plan Initiatives: GPI-13 Aerodrome design and management
INDONESIA
EUROPE London to Ankara : 2.837 Km
London = 0 hours Ankara = UTC +3 hours
INDONESIA Sabang to Merauke : 5.253 Km
Sabang = UTC +7 hours Merauke = UTC +9 hours
USA LA to New York: 3.940 Km New York = UTC - 4 hours
Los Angeles = UTC -7 hours
Presenter
Presentation Notes
Indonesia is populated with over 240 million people living across a far stretched archipelago. Aviation plays an important role for the transportation and is key driver for economic growth. A seaplane base provides a means of transportation across islands. It provides an opportunity for charter and concession pilots, the tourist industry, and other enterprises.
• Seaplane base is an area of water used or intended to be used for landing and takeoff of aircraft, together with appurtenant shore side buildings and facilities.
• Where water landing areas are available, seaplanes combine the speed of the airplane with accessibility of boats, to provide service of business and pleasure. In emergencies, seaplane can evacuate people and deliver food and medical supplies.
• Seaplane base could be the best as a mode of transportation in geographical isolation, lack of land airports, special flight activities, or recreational access.
Presenter
Presentation Notes
Seaplane base has less adverse impact on the environmental than constructing a land runway in areas of recreation. Seaplane base can replace the need for airports or can supplement major airports by relieving the heavy traffic congestion experienced at the airports.
Standard for Seaplane Bases in Indonesia
• Manual of Standard (MoS) Part 139 Vol III
Seaplane Bases (Waterbases) – Adopted from FAA Advisory Circular 150/5395-1
• MoS 139 Vol III, standards for : – Water operating area – Anchorage area – Shoreline facilities
WATER OPERATING AREA
Turning Basin (3)
Water Operating Area (1)
Taxi Channel (2)
R = 60 m
Presenter
Presentation Notes
The water operating area depends on the biggest seaplane operation, obstruction surrounding area (fix or mobile), water currents and wave action. Location will be chosen based on feasibility study of the technical, operational and environmental aspect. The taxi channel. A taxi channel should have a minimum width of 45 m as direct access to the onshore facility and, when possible, should be oriented so the approach to the ramp or float will be into the prevailing wind or current. A minimum clearance of 15 m should be provided between the side of the channel and the nearest obstruction. Turning basins. A minimum radius of turning basin 60 and should be located adjacent to the shoreline facility and at each end of the water operating area. A minimum clearance of 15 m, should be provided between the side of the turning basin and the nearest obstruction.
WATER OPERATING AREA – ANCHORAGE AREA
Anchor Line Length : 6 times the maximum depth at mean high water
Anchor Spacing Length : 2 OL + 38 m
Presenter
Presentation Notes
Anchorage areas. Anchorage areas should provide maximum protection from high winds and rough water. The size is determined by the number and size of aircraft to be accommodated. Anchorage areas must satisfy the need for aircraft to turn into the wind as they swing on their moorings. Center to center anchor spacing, for small twin-float aircraft mooring, should not be less than twice the length of the longest anchor line plus 125 feet (38 m). The length of anchor line "A“ should be six times the maximum depth at mean high water.
SHORELINE FACILITIES
Presenter
Presentation Notes
Shoreline Facilities provide two general functions: (1) enable servicing, loading and unloading, and mooring without removing the aircraft from the water, and (2) provide haul-out facilities for removing seaplanes from the water for fresh water wash downs and maintenance. In the shoreline, there are facilities: Slipways. A slipway should be where the water level change is not greater than 0.6 m and the minimum low water depth is not less than 0.5 m. The inside dimension of the slipway should be 0.6 to 1 m wider than the floats and 1 to 1.2 m longer than the rudder down float length. Ramps. A minimum of 30 m of unobstructed water should be available directly offshore from the ramp, in the direction from which approaches are normally made. A ramp width of 9 to12 m will accommodate aircraft in most wind, current, and tidal conditions. Fixed pier. A minimum of 30 m of unobstructed water or a turning basin should be available in the direction from which approaches are normally made to the floating pier. The minimum clearance between the centerline of a taxi route and the near faces of piers, floats, ramps, or marine railway is18 m. Floating pier. Floating piers offer great flexibility. A small float, 3 by 4.5 m, designed to support loads up to1134 kg, will handle a single plane. Larger floats intended for mooring two or more aircraft should be designed to support gross loads up to 2268 kg. GANGWAYS. Floats are usually connected to the shore or pier by a gangway. The length of the gangway depends on the maximum water level variation.
Certification
• A seaplane base (waterbases) is considered as an airport. It should be certified or registered for the safety regulation compliance. (CASR 139 subreg 139.101)
• There are two registered seaplane bases in Indonesia which serve aircraft type of Cessna 208A (caravan) and DHC 6 twin otter with seating capacity of 9 seats.
Action by the Meeting
1. note the information contained in this paper. 2. invite ICAO to establish standards and
recommended practices for seaplane bases and develop manual for certification of water aerodromes.
