Greetings from Sightline!

Sightline is a team of Airfield Marking Consultants. We don't paint; instead we are marking experts, working with the industry to improve marking systems worldwide.

The purpose of this seasonal publication, if it is new to you, is to inform about issues regarding airport markings. Thanks to all of you who subscribed through our website at

It's a new year which means a new group of airports are hosting the 2012 Airfield Marking Symposiums, so check them out. In this issue we discuss recent changes to the P-620 specification within the FAA AC 150/5370-10F which are important to note. Enjoy!

Here's where we're talking:

2012 Airfield Marking Symposiums:

Sign Language

Airfield markings are certainly receiving more attention and scrutiny in the last several years. Efforts to make them bigger and more visible are well documented in guidance literature. However, the most recent change to the advisory circular will make them less visible during darkness. More>>

LOC and Key

Receiving an FAA Letter of Correction (LOC) is never an enjoyable thing. It's something airports would like to avoid and are pleased when no discrepancies require attention. Perhaps there's a discrepancy that every Part 139 airport should consider paying attention to. More>>


"I can get ten snowplows, but I can't get one paint truck. I need to slap a plow blade on the front of a paint truck, and maybe then it would become AIP eligible!" Some have been dreaming of a crossbreed... More>>

2012 Symposiums

The symposiums are back in 2012! The two-day workshop that details the art that is airfield painting will be in San Antonio, Newark, Denver, and Daytona Beach. More>>

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