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Old 18th Jan 2013, 15:20
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stuckgear
 
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Would stobes and lights have helped? From an aviation life from the age of five, I don't remember anyone telling me about the time they avoided an obstruction because they saw a light. Has anyone here?
they do all the time. Particularly when obstructions are in low density population areas, they provide a visual cue as to the obstruction.

because a pilot doesn't yank the yoke hard into his chest, yelling 'yeehaw! missed that one!' doesn't mean he isn't responding to visual cues

by your postulation then regulatory authorities the world over are wrong with regulatory practises, which have evolved of the years by way of learning through past incidents and tombstone progress, that require obstructions to flight be marked with high intensity lights and you are right.

FAR-AIM Section 2 Air Navigation and Obstruction Lighting.

-2-3. Obstruction Lights
a. Obstructions are marked/lighted to warn airmen of their presence during daytime and nighttime conditions. They may be marked/lighted in any of the following combinations:
1. Aviation Red Obstruction Lights. Flashing aviation red beacons (20 to 40 flashes per minute) and steady burning aviation red lights during nighttime operation. Aviation orange and white paint is used for daytime marking.
2. Medium Intensity Flashing White Obstruction Lights. Medium intensity flashing white obstruction lights may be used during daytime and twilight with automatically selected reduced intensity for nighttime operation. When this system is used on structures 500 feet (153m) AGL or less in height, other methods of marking and lighting the structure may be omitted. Aviation orange and white paint is always required for daytime marking on structures exceeding 500 feet (153m) AGL. This system is not normally installed on structures less than 200 feet (61m) AGL.
3. High Intensity White Obstruction Lights.Flashing high intensity white lights during daytime with reduced intensity for twilight and nighttime operation. When this type system is used, the marking of structures with red obstruction lights and aviation orange and white paint may be omitted.
4. Dual Lighting. A combination of flashing aviation red beacons and steady burning aviation red lights for nighttime operation and flashing high intensity white lights for daytime operation. Aviation orange and white paint may be omitted.
5. Catenary Lighting. Lighted markers are available for increased night conspicuity of high-voltage (69KV or higher) transmission line catenary wires. Lighted markers provide conspicuity both day and night.
b. Medium intensity omnidirectional flashing white lighting system provides conspicuity both day and night on catenary support structures. The unique sequential/simultaneous flashing light system alerts pilots of the associated catenary wires.
c. High intensity flashing white lights are being used to identify some supporting structures of overhead transmission lines located across rivers, chasms, gorges, etc. These lights flash in a middle, top, lower light sequence at approximately 60 flashes per minute. The top light is normally installed near the top of the supporting structure, while the lower light indicates the approximate lower portion of the wire span. The lights are beamed towards the companion structure and identify the area of the wire span.
d. High intensity flashing white lights are also employed to identify tall structures, such as chimneys and towers, as obstructions to air navigation. The lights provide a 360 degree coverage about the structure at 40 flashes per minute and consist of from one to seven levels of lights depending upon the height of the structure. Where more than one level is used the vertical banks flash simultaneously.
and perhaps rewind to 2-2-1

2-2-1. Aeronautical Light Beacons
a. An aeronautical light beacon is a visual NAVAID displaying flashes of white and/or colored light to indicate the location of an airport, a heliport, a landmark, a certain point of a Federal airway in mountainous terrain, or an obstruction. The light used may be a rotating beacon or one or more flashing lights. The flashing lights may be supplemented by steady burning lights of lesser intensity.
b. The color or color combination displayed by a particular beacon and/or its auxiliary lights tell whether the beacon is indicating a landing place, landmark, point of the Federal airways, or an obstruction. Coded flashes of the auxiliary lights, if employed, further identify the beacon site.
In you quest educate the world, on your view and opinions regardless of historical incidents, feel free to address your progress plan in the removal of obstruction lights with the CAA, the FAA as well as ICAO and perhaps any other national aviation authority that you feel is wrong. heck, you could even go in with a carbon footprint plan.


would lighting in use on the crane at the time of the incident, prevented the impact ? maybe, maybe not. but the cost of a couple hundred quid light on couple hundred thousand pound crane would be prudent in preventative measures and it's onle less hole in the swiss cheese.

Last edited by stuckgear; 18th Jan 2013 at 15:30.
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