Content
@
https://warpcast.com/~/channel/thomas
0 reply
0 recast
0 reaction
Thomas
@aviationdoctor.eth
I ran a search for airborne conflicts and near mid-air collisions at Ronald Reagan Washington National Airport (DCA) for the last five years in NASA's Aviation Safety Reporting System (ASRS), and found six of them (~1.5 per year if we exclude the 2020–2021 period of virtually no traffic due to COVID–19). 🧵
7 replies
6 recasts
31 reactions
Thomas
@aviationdoctor.eth
#1 is ACN 1618051 in Feb 2019. A Bombardier CRJ200 did a go-around due to a wind gust and found itself climbing too close to a departing Embraer ERJ170. A resolution advisory was issued by the TCAS and an evasive maneuver had to be performed.
2 replies
0 recast
14 reactions
Thomas
@aviationdoctor.eth
#2 is ACN 1871698 in Jan 2022. ATC failed to separate a landing aircraft and a crossing helicopter above the Potomac, resulting in a resolution advisory followed by a GPWS alert. An evasive maneuver had to be performed.
1 reply
0 recast
5 reactions
Thomas
@aviationdoctor.eth
#3 is 1935869 in Sep 2022. ATC reported an airborne conflict between two military helicopters and cited manpower shortage as causal (controller working two positions).
2 replies
0 recast
6 reactions
Thomas
@aviationdoctor.eth
#4 is 1947048 in Oct 2022. A landing aircraft received a traffic followed by a resolution advisory over the Potomac and performed an emergency climb to avoid collision with a helicopter lifting off.
2 replies
0 recast
3 reactions
Thomas
@aviationdoctor.eth
#5 is 2067857 in Dec 2023. A landing aircraft came within 20–50 ft of a drone. Approach continued as normal after that.
2 replies
0 recast
2 reactions
Thomas
@aviationdoctor.eth
#6 is 2106384 in Apr 2024. A landing aircraft received a traffic advisory as it passed 300 ft above a crossing helicopter not properly deconflicted by ATC. The aircraft briefly departed from the glide path but eventually resumed its approach and landed normally.
1 reply
0 recast
2 reactions
Thomas
@aviationdoctor.eth
In hindsight, four of these were consistent warning signs. I fully expect visual separation rules to change at least at DCA, if not nation-wide after the FAA completes its investigation into yesterday's accident. Link to the database: https://asrs.arc.nasa.gov/search/database.html 🎬
1 reply
0 recast
3 reactions
