Questions tagged [runway-contamination]

Questions about circumstances where a runway is covered in something that makes it slipperier (such as water, snow, slush, or ice), and how aircraft operations are affected when this happens.

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How often do large airports clean up the black stuff? [duplicate]

Looking at Seattle International as an example, the first third of the runway is covered with a dark streak of tire material that accumulated from landings. How often, if ever, is this cleaned up? ...
Ryan Mortensen's user avatar
6 votes
1 answer

These "FICON" NOTAM's contractions aren't in the FAA contraction list. What do they mean?

These NOTAMs for KSGF state "Snow" when the icon on the left is hovered over with a mouse. The contraction "FICON" does not appear in the Notam Contractions list. It is currently the middle of June ...
Ryan Mortensen's user avatar
6 votes
1 answer

When is a runway considered to be wet or slippery for 135 or 121 landing performance considerations?

For the purposes of following FAA regulations, when is a runway considered to be wet or slippery in the context of landing performance calculations? Specifically, what definitions or guidance on ...
J W's user avatar
  • 16.5k
2 votes
1 answer

Why don’t aircraft undergo contaminated-runway landing-distance and rejected-takeoff certification testing?

All aircraft have to undergo testing to determine how much runway they need in order to safely land and come to a stop, or to safely reject a takeoff. They do not, however, have to undergo this ...
Vikki's user avatar
  • 28k
2 votes
1 answer

Does the landing distance required for a wet runway needs to be within a certain range of the landing distance available?

Conform the regulations the landing distance required (LDR) for propeller engine aircraft needs to be within 70% of the landing distance available (LDA). The LDR for a wet runway needs to be ...
JM93's user avatar
  • 263
4 votes
1 answer

What are the performance adjustments for a Beechcraft B1900D on a wet runway?

I am doing runway analysis for B1900D and AFM Section 5, does not provide correction to V1 or the takeoff weight for takeoff on a wet runway. Appreciate if someone can provide information regarding ...
Gopinath AS's user avatar
13 votes
3 answers

How are landing aircraft handled during an emergency runway closure?

A Hypothetical scenario A landing aircraft at a busy airport such as London Gatwick LGW has an issue during landing that requires the immediate closure of the runway. My understanding is that ...
Notts90's user avatar
  • 3,559
5 votes
1 answer

How do we use the runway condition assessment matrix?

Starting on October 1st, 2016 the FAA is moving away from providing Mu values for runway friction reports to a new format showing contamination type and depth for each third of the runway. Along with ...
wbeard52's user avatar
  • 12.2k