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For Two Pilots, a False Reality Has Tragic Results

They aren't the only ones who have been led astray by incorrect expectations in IMC.

The mental picture that we form of our surroundings when we cannot see them is an essential element in night and instrument flying. [Rodrigo Soares/Unsplash]
Gemini Sparkle

Key Takeaways:

  • Night flying significantly amplifies hazards, leading to misjudgments of terrain, unreliable visual cues for height, and increased risk in low visibility, even over familiar areas.
  • Strict adherence to published procedures and a realistic assessment of current conditions are paramount, as over-familiarity and outdated mental maps can lead experienced pilots to disregard safety.
  • Circling approaches are inherently dangerous, especially at night or in uncertain visibility, as rapidly changing conditions and unreliable visual references can lead pilots to descend unsafely.
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The hill was not particularly steep nor particularly tall nor particularly close to the runway—so nondescript, in fact, that pilots probably barely took note of it. In daylight they would maintain the runway heading while climbing and the hill would sink harmlessly below and behind them.

At night it could be a different matter. That the hill was a potential hazard had been recognized, and a row of red lights on 30-foot stanchions had been erected, some distance from the side of the runway and parallel to it, to remind pilots not to drift to the left. The instrument departure procedure instructed pilots to “climb visually over airport, to cross airport at or above 1,500 feet, then proceed on course.” The phrase “cross airport” was unclear; it was later changed to a more conventionally worded instruction to maintain runway heading.

Peter Garrison

Peter Garrison taught himself to use a slide rule and tin snips, built an airplane in his backyard, and flew it to Japan. He began contributing to FLYING in 1968, and he continues to share his columns, ""Technicalities"" and ""Aftermath,"" with FLYING readers.

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