The chart that showed forty‑five feet forced the plane to hit the wires
カートのアイテムが多すぎます
ご購入は五十タイトルがカートに入っている場合のみです。
カートに追加できませんでした。
しばらく経ってから再度お試しください。
ウィッシュリストに追加できませんでした。
しばらく経ってから再度お試しください。
ほしい物リストの削除に失敗しました。
しばらく経ってから再度お試しください。
ポッドキャストのフォローに失敗しました
ポッドキャストのフォロー解除に失敗しました
The chart that showed forty‑five feet forced the plane to hit the wires
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ナレーター：
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The chart that showed forty‑five feet forced the plane to hit the wires
In this episode, we follow the Nijmegen's night approach to Prestwick and the chain of choices, weather reports, and flawed wartime charts that framed the crew's decisions. It lays out the margins they had - delays, wind estimates, runway options - and asks whether those margins were enough.
Person: Koene Dirk Parmentier
Event: KLM flight PH‑TEN (Constellation Nijmegen) approach to Prestwick
Date: October 20, 1948
Location: Five miles northeast of Prestwick
Cargo: Diamonds and watches valued at £31,000
- Captain Parmentier, KLM’s most decorated pilot, had written the airline’s low‑visibility landing rules and knew runway two‑six was off‑limits in low cloud.
- The Nijmegen departed Schiphol 1 hour 11 minutes late after extra cargo for Iceland was added, reducing operational margins.
- Meteorological forecast predicted probable clearing, but actual cloud base that night sat between 300 and 600 feet, low enough to obscure a visual approach.
- Runway 32 offered ground‑controlled radar approach but Parmentier judged crosswinds near KLM limits, so he elected runway 26 with no radar guidance.
- The cockpit chart used wartime American military data and showed the highest terrain in the approach corridor as 250 feet, with a critical spot marked 45 feet.
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