Aviation news analysis
50 SKY SHADES - World aviation news

FAA Asks Operators to Increase Safety Margins When Landing on Wet Runways

Download: Printable PDF Date: 22 Sep 2015 15:47 category:
Publisher:
FAA Asks Operators to Increase Safety Margins When Landing on Wet Runways - Business aviation publisher
Tatjana Obrazcova
Country: United States

A recent FAA Safety Alert for Operators (SAFO) emphasizes the need for flight crews to take a conservative approach when landing on water-slickened surfaces, going beyond the manufacturer's published landing distances and advisory data, and even the agency's own prior guidance on the matter.

FAA Asks Operators to Increase Safety Margins When Landing on Wet Runways

Last year, the FAA published Advisory Circular 91-79A, which offered information to assist pilots with identifying, understanding and mitigating the risk factors that lead to runway overruns on landing. That was followed by a SAFO calling on turbojet aircraft operators to add a margin of at least 15 percent above the manufacturer's published dry-runway landing distances when landing on wet runways.

In many cases, though, even that allowance may not provide adequate stopping margins under all conditions. "When determining published landing distances, the manufacturer was trying to hit the absolute, best-case numbers," noted Ben Kohler, lead member of the Technical Excellence Working Group of NBAA's Safety Committee and a Dassault 2000EX and Gulfstream GIV-SP captain.

"That generally means crossing the threshold at 50 feet, at Vref and applying maximum braking immediately after touchdown," Kohler explained. "If you actually operated like that, however, the passengers in back likely would never fly with you again."

For single-plane/single-pilot operators and small flight departments, Kohler suggested emulating the best practices of larger flight departments, not only in planning greater margins when landing on wet or contaminated runways, but also in looking for additional opportunities to incorporate similar safety guidelines throughout other phases of their operations.

"Such an approach extends from preflight planning, to incorporating more conservative performance margins (minimum runway length or width, maximum crosswind, etc.), post-flight debriefings and gathering feedback from crews regarding the effectiveness of planned mitigations for a given flight," said Kohler.

Additionally, a guide being drafted by the Technical Excellence Working Group will assist operators in developing these practices, as well as incorporating case studies and performance problems to generate discussions at flight department safety meetings.

"Without question, we all must work harder to prevent runway excursions," he concluded. "The Flight Safety Foundation examined 14 years of accident data for commercial aircraft and found that 30 percent of those accidents involved runway operations. Of those, 97 percent involved a runway overrun. That's a big chunk, and the risk factors apply to other aircraft types, as well."



Loading comments for FAA Asks Operators to Increase Safety Margins When Landing on Wet Runways...


Recommended

Arbus Corporate Jets is showing ACJ319 at EBACE

Airbus Corporate Jets (ACJ) is showing an ACJ319 at EBACE, giving potential customers the opportunity to see for themselves how they can fly in greater comfort and space than in traditional business j...

Welcome Textron Aviation at EBACE 2019

Are you ready to see the latest of business aviation industry? To find out about latest innovations, latest achievement, idustry changing initiatives? So let us to give you sone informationa regard...

A touch of App -iness by Vertis Aviation

In order to know maximum about a touch of App -iness, you have to meet Vertis Aviation at EBACE 2019! Come for the official launch on Booth B71!​ Vertis Aviation App users will have...

The Start of Codeshare between airBaltic and SAS

A codeshare agreement is signed between airBaltic and SAS, offering convenient connections between Latvia, Scandinavia and beyond.  Annelie Nässéen, Executive Vice Presid...