The following table of units of measurement will be used by aeronautical stations within BAHRAIN FIR / BAHRAIN UIR for air and ground operations.
| FOR MEASUREMENT OF | UNITS USED |
|---|---|
| Distance used in navigation, position reporting, etc. | |
| Generally in excess of 2 nautical miles | Nautical Miles and tenth |
|
Relatively short distances such as those relating to Aerodromes (e.g. runway lengths) |
Metres |
| Altitudes, elevations and heights | Feet |
| Horizontal speed including wind speed | Knots or ratio MACH number |
| Vertical speed | Feet per minute |
| Wind direction for landing and taking off | Degrees Magnetic |
| Wind Direction except for landing and taking off | Degrees True |
| Visibility including runway visual range | Kilometres or metres |
| Altimeter setting | Hecto Pascals (HPA) |
| Temperature | Degrees Celsius |
| Weight | Metric tons or Kilograms |
| Time | Hours and Minutes, the day of 24 hours beginning at midnight UTC |
General
Coordinated Universal Time (UTC) is used by air navigation services and in publication issued by the Aeronautical Information Service.
Reporting of time to the nearest minute, e.g. 12:40:35 is reported 1241.
When a " Date - Time Group " is required, two figures are used for each of the following, in this order; YEAR - MONTH - DAY - HOUR - MINUTE for example, twenty seven minutes past midnight on the third of December 1995 is down as "9512030027"
Local time in the Kingdom of Bahrain is UTC plus 3 hours.
All public geographical coordinates indicating latitude and longitude are expressed in terms of the World Geodetic system - 1984 (WGS - 84) geodetic reference datum except where indicated that the International 1909 spheroid is still extant.
To be developed.
To be developed.
To be developed.
Area of application for the published geographical coordinates coincides with the area of responsibility of the Aeronautical Information Service, as well as the airspace over the high seas encompassed by the BAHRAIN FIR / BAHRAIN UIR in accordance with the regional air navigation agreement.
An asterisk (*) will be used to identify those published geographical co - ordinates which have been transformed into WGS - 84 coordinates but whose accuracy of original field work does not meet the requirements in Annex 11, Chapter 2 and Annex 14, Volumes I and II, Chapter 2. Specifications for determination and reporting of WGS - 84 coordinates are given in Annex 11, Chapter 2 and Annex 14, Volume I and II, Chapter 2.
The nationality mark for aircraft registered in the Kingdom of Bahrain is A 9 C (Alfa Nine Charlie).
The following Public Holidays are fixed and applicable as indicated. Airport and ATC Facilities are unaffected. Additional Public Holidays that fall in accordance with the Islamic Calendar are published as an AIC.
| HOLIDAY | DATE |
DURATION OF HOLIDAY DAYS |
|---|---|---|
| GREGORIAN NEW YEAR | 1 JAN | 1 |
| BAHRAIN LABOUR DAY | 1 MAY | 1 |
| BAHRAIN NATIONAL DAY | 16 DEC | 2 |