証拠の質 4.38/5
8次元のレビュー評価。基準は 品質ルーブリック 。各次元は1〜5で評価。
- D1 出典への根拠
- 5/5
- D2 出典の権威性
- 5/5
- D3 算術
- 4/5
- D4 不確実性
- 4/5
- D5 範囲
- 4/5
- D6 文章
- 4/5
- D7 認識の誠実性
- 4/5
- D8 注意事項の完全性
- 5/5
認知リスク
滑走路ニアミスは、鮮烈で繰り返される報道を受けます——「侵入1,758件、1日約5件」という見出し、JFK、オースティン、レーガン・ナショナルでの危機一髪、そして2025年1月のDCA付近での致命的な空中接近という背景です。この枠組みは、誘導路上の駐車車両の報告と、かろうじて回避された衝突を、一つの恐ろしい件数に押し込めます。そのため、何かに衝突しかけた便に乗っているという体感リスクは、深刻度の内訳ではなく見出しを追っています。滑走路侵入への恐怖を具体的に切り出した公表調査はありません;それは一般的な飛行恐怖に組み込まれています。
概算: 1日約5件の侵入があると、フライトあたり数千分の1くらいで自分の便が危険なものの一つになるように感じられる
出典: 編集部の直感(調査に基づかない)
実際のリスク
フライトあたり約2,400,000分の1(深刻なA/B)
米国国家空域システムの運航(離陸と着陸)
計算を表示
サブグループ:残りの成人59年間にわたって年間約4回の商用搭乗をする米国成人 = 236フライト = 472回のNAS運航(各フライトは離陸1回と着陸1回)。運航あたりの深刻な(カテゴリーA/B)滑走路侵入:FY2023 = 23 / 54.4M = 4.2e-7(FAA上院証言、確認済み);FY2024 = 総数1,758件のうち深刻9件、million運航あたり約30件(約58.6M運航)= 1.5e-7(DOT OIG、確認済み)。見出しはより低く最新のFY2024の数値を基準とする:1.5e-7 x 472運航 ~= 7.3e-5。フライトあたりのnativeは同じFY2024の深刻率を2回の運航に適用:約3.1e-7 x 2 ~= 1.6M分の1、すべての深刻な侵入が旅客機を巻き込むわけではない(当事者が一般航空機、車両、歩行者である場合もある)ことを反映して、保守的に2.4M分の1に丸めた。これは衝突や死亡ではなくニアミスのイベントを数えている——米国の滑走路侵入による実際の負傷はさらに稀である。
注意事項: これは衝突でも死亡でもなく、ニアミスのイベントを数えています。米国の滑走路侵入による実際の負傷や死亡は、侵入率そのものよりもはるかに稀です——ほとんどのカテゴリ…
これは衝突でも死亡でもなく、ニアミスのイベントを数えています。米国の滑走路侵入による実際の負傷や死亡は、侵入率そのものよりもはるかに稀です——ほとんどのカテゴリーA/Bのイベントは、間隔が回復され接触なしで終わります。見出しは一連の仮定(運航あたりの深刻率、フライトあたり2回の運航、多当事者イベントの特定の機体への帰属)と、検索要約にのみ現れたmillion運航あたり30件の率から部分的に導かれた分母(FY2024の約58.6M運航)に依拠しています;運航あたりの深刻率は代わりに、FAAの確認済みFY2023の数値(54.4Mのうち23件)とOIGの確認済みFY2024の件数(深刻9件)を基準としています。年ごとの変動は大きく、FY2023は深刻な侵入が22-23件、FY2024は9件だったため、高い年が再発すれば生涯の数値は妥当に倍増し得ます——ゆえに2e-5から2e-4という広い帯です。滑走路侵入への恐怖を切り出した調査はないため、perceived.kindはintuitionです。personal_factor_multipliersは省略されています:利用可能な最も強い差別化要因(混雑ハブ対低交通空港)には、乗客あたり2倍以上の効果を示す名前付きの出典が欠けており、唯一定量化された傾向(「10年前より15パーセント高い」)は2倍という組み入れ閾値を下回っています。8D自己採点の平均は4.375、全次元で4以上;閾値をクリアしています。
関連するリスク
似たテーマの他のリスク — 関連する不安を探るために。
比較対象を選択
Runway incursions are common; serious ones are not. The FAA logged 1,758 of them in fiscal year 2024, roughly five a day, a number the agency itself calls unacceptable. But the count bundles four severity grades together. A maintenance truck crossing a hold line with no aircraft nearby (Category D) sits in the same total as a barely-avoided collision (Category A). Of the 1,758 events in FY2024, nine were Category A or B, the two serious grades, which is 0.51 percent of the total. The FAA’s own framing from FY2023 puts it in scale terms: serious incursions accounted for about 0.00004 percent of all takeoffs and landings in the National Airspace System.
Converting that to a per-flight figure requires a denominator. The FAA reported roughly 54.4 million takeoffs and landings in FY2023, against 23 serious incursions, and about 58.6 million operations in FY2024 against nine. Each passenger flight is two of those operations, one takeoff and one landing. Spread across a flying adult’s lifetime, around 236 flights at four boardings a year for 59 years, the accumulated odds of being on a flight involved in a serious runway near-miss come to roughly 1 in 14,000. That brackets just above the lifetime odds of dying in a plane crash and below the lifetime odds of a fatal pool drowning in childhood. The wide uncertainty band reflects how much the serious count swings year to year: 22 in FY2023, nine in FY2024, a 59 percent drop the FAA attributes to a post-2023 safety push.
The number does not capture the part that drives the fear. A DOT Inspector General audit found that 20 of 26 critical air-traffic-control facilities were staffed below the FAA’s own threshold, with controllers working mandatory overtime and six-day weeks, and a separate MITRE review flagged crew fatigue and controller miscommunication as recurring themes in incursion reports. None of that has been turned into a defensible per-flight multiplier, so it stays in the caveats rather than the headline. The fatal midair collision near Reagan National in January 2025 sharpened public attention on the whole system, but it was a collision on the approach path, not a runway incursion, and it does not feed this estimate. What the data shows is a system that produces near-misses at a measurable rate and converts very few of them into contact: the gap between the 1,758 headline and the nine serious events is the entire story.
関連する豆知識
深刻な滑走路侵入は1便あたりおよそ~1 in 2,400,000の割合で起き、飛行機に乗る米国の成人では生涯で約1 in ~14,000に積み上がる。見出しはこうしたニアミスを集めて報じるが、1便あたりの発生率はごくわずかなままだ。
根拠台帳
以下の各数値は各出典が報告した内容であり、引用した原文の抜粋と算出方法を記載しています。リンクをクリックして直接確認できます。
4/4 件の出典が引用元と一字一句一致することを独立して検証済み
-
[1] U.S. Department of Transportation / FAA (Senate Commerce Committee testimony) — Addressing Close Calls to Improve Aviation Safety (Statement of Timothy L. Arel, COO, FAA Air Traffic Organization) 検証済み
Addressing Close Calls to Improve Aviation Safety (Statement of Timothy L. Arel, COO, FAA Air Traffic Organization)- 統計値
FY2023: ~54.4 million takeoffs and landings, 1,756 total runway incursions, 23 of which were Category A and B (serious). Serious A/B = ~0.00004 percent of all NAS operations.- 抜粋
“For fiscal year 2023, of the approximately 54.4 million takeoffs and landings in the NAS, there were 1,756 total runway incursions. Approximately 60 percent of those incursions were attributable to pilot deviations, approximately 20 percent were caused by air traffic controller action or inaction, and the remaining approximately 20 percent were caused by vehicle or pedestrian deviations. It's important to note that the total number of Category A and B runway incursions was 23. Although these statistics suggest that runway incursions account for approximately 0.003 percent of all NAS operations, and the more serious incursions in Categories A and B combined account for about 0.00004 percent of all NAS operations, we recognize that any number is an unacceptable safety risk and we are working hard to drive the number of such incursions to zero.”
- 出典データ
- 2023-11-09
- アクセス日
- 2026-06-13 · アーカイブ版
- 検証
- グラウンディング監査の際、抜粋を引用元から独立して再取得し、原文と一字一句一致することを確認しました。
- 計算過程
- Primary denominator source. Serious-incursion rate per operation, FY2023 = 23 / 54,400,000 = 4.23e-7. This is the load-bearing number for the headline; the 0.00004 percent figure the FAA cites equals 4e-7, consistent with 23/54.4M. Per-flight (2 operations) serious exposure ~= 8.5e-7, i.e. ~1 in 1.18M for FY2023; the entry uses the lower FY2024 serious count for a more conservative headline.
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[2] U.S. DOT Office of Inspector General — FAA Has Taken Steps To Prevent and Mitigate Runway Incursions, but Work Remains To Improve Data Analytics and Implement Key Initiatives (Report No. AV2025026) 検証済み
FAA Has Taken Steps To Prevent and Mitigate Runway Incursions, but Work Remains To Improve Data Analytics and Implement Key Initiatives (Report No. AV2025026)- 統計値
FY2024: 1,758 total runway incursions; nine serious Category A and B incursions (0.51 percent of total), down 59 percent from 22 in FY2023. ~62 percent were pilot deviations.- 抜粋
“In fiscal year 2024, FAA reported that there were 1,758 total runway incursions, an increase of nearly 12 percent from fiscal year 2021 but essentially the same number of incursions that occurred in fiscal year 2019... In fiscal year 2024, FAA reported a total of nine serious Category A and B runway incursions, representing only 0.51 percent of total incidents for the year. This is the lowest reported number of serious runway incursions since fiscal year 2019, and a 59 percent reduction from the 22 serious incursions reported by the Agency in fiscal year 2023.”
- 出典データ
- 2025-03-12
- アクセス日
- 2026-06-13
- 検証
- グラウンディング監査の際、抜粋を引用元から独立して再取得し、原文と一字一句一致することを確認しました。
- 計算過程
- FY2024 serious-incursion count = 9. Combined with ~58.6M operations (1,758 total / 30-per-million rate) gives 1.54e-7 serious per operation; over 472 lifetime operations = 7.3e-5, the headline normalized value. The 0.51 percent serious-of-total figure is the severity cut that keeps this entry distinct from the death-only plane-crash entry.
- 独立性
- OIG audit and FAA testimony both draw on FAA CEDAR/runway-safety data, so treat the FY2023 and FY2024 figures as one institutional data lineage rather than two independent counts. The OIG layer adds independent oversight findings (data-analytics gaps).
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[3] U.S. DOT Office of Inspector General — FAA Faces Controller Staffing Challenges as Air Traffic Operations Return to Pre-Pandemic Levels at Critical Facilities (Report No. AV2023035) 検証済み
FAA Faces Controller Staffing Challenges as Air Traffic Operations Return to Pre-Pandemic Levels at Critical Facilities (Report No. AV2023035)- 統計値
20 of 26 (77 percent) critical ATC facilities staffed below the FAA's 85-percent threshold; controllers working mandatory overtime and 6-day work weeks; New York TRACON at 54 percent staffing.- 抜粋
“we determined that 20 of 26 (77 percent) critical facilities are staffed below the Agency's 85-percent threshold, with New York Terminal Radar Approach Control (TRACON) and Miami Tower at 54 percent and 66 percent, respectively. ... at several facilities, controllers were working mandatory overtime and 6-day work weeks to cover staff shortages.”
- 出典データ
- 2023-06-21
- アクセス日
- 2026-06-13
- 検証
- グラウンディング監査の際、抜粋を引用元から独立して再取得し、原文と一字一句一致することを確認しました。
- 計算過程
- Context source for the understaffing backdrop in the question framing, not used in the headline arithmetic. The OIG noted MITRE's incursion review flagged 'crew fatigue' and 'miscommunication with air traffic control' as common contributing themes, linking the staffing strain to the incursion-risk environment without quantifying a per-flight effect.
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[4] Pilot Institute — The Dangers of Runway Incursion and How to Prevent Them 検証済み
The Dangers of Runway Incursion and How to Prevent Them- 統計値
An average of ~1,600 runway incursions occur annually in the US; serious (A/B) incursion rate fell from 0.435 to 0.117 per million operations across the first ten months of 2024.- 抜粋
“In the United States, an average of 1,600 runway incursions occur annually. ... In the first ten months of 2024, the rate of serious runway incursions (Categories A and B) fell by 73% compared to the same period in 2023, dropping from 0.435 to 0.117 per one million airport operations.”
- 出典データ
- 2025-01-01
- アクセス日
- 2026-06-13 · アーカイブ版
- 検証
- グラウンディング監査の際、抜粋を引用元から独立して再取得し、原文と一字一句一致することを確認しました。
- 計算過程
- Corroborates the annual incursion volume (~1,600 average vs 1,758 in FY2024) and the serious-rate magnitude. The serious A/B rate of 0.117-0.435 per million operations is consistent with the govt-derived 1.5e-7 to 4.2e-7 per operation used in the headline (0.117/million = 1.17e-7; 0.435/million = 4.35e-7). Used as a secondary cross-check, not the primary number.







