Transcript RNAV Briefing - Georgia Airports

Airport 20 to 1
Approach Surface
&
Restoring Night
Minimums
Georgia Airports Association (GAA)
2015 Annual Workshop
Cindy M Hintz
Eastern Flight Procedures Team
February 27, 2015
Federal Aviation
Administration
20:1 Penetrations Background
• Late 1990’s: Criteria developed by Flight Standards (AFS).
• Oct 2012: AFS required immediate NOTAM action to
restrict night operations when 20:1 penetrations identified.
• Jan 2014: Refined policy considered “Risk” factors based
on the amount of obstacle penetration, allowed the airport
manager a 30 day validation period, and allowed for
Category A/B and C/D surface areas to be restricted
independently. (NOTAMs could restrict the C/D area only if
the A/B area was clear of penetrations).
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Recent Change to 20:1 Dimensions
• AFS has implemented a change to FAA Order
8260.3B, United States Standards for TERPS,
Straight-in Visual Area Beginning Width.
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Dimension Changes Outlined
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New vs Old 20:1 (Width)
• Original 20:1: CAT C/D beginning width 800FT
• Revised (20:1 & 34:1): CAT A/B/C/D beginning width 400FT
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TERPS
Offset
Evaluation
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How are 20:1 Approach Penetrations
Identified ?????
• Biennial Review: Terminal instrument procedures
reviewed every two years against current criteria.
During this review 20:1 penetrations may be
identified.
• Routine Amendments: While amending procedures
to support airport improvement projects or Air Traffic
change requests, current criteria is applied and 20:1
penetrations may be identified.
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When 20:1 Penetrations Identified
Notification Process
• Initial Notification: Within 3 business days, a file is
forwarded to the airport sponsor requiring validation of each
penetration ASAP, but not more than 30 days. The Airport
District Office (ADO) is info copied.
• Action required by sponsor: Airport owner/sponsor must
provide written validation report to FPT and info copy ADO.
• No Response: If no response received from sponsor within
30 days, the penetrations will be treated as existing and the
instrument Approach Procedures (IAPs) will be restricted at
night by NOTAM.
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Obstacle Verification
• Verification: Airport owner/sponsor must verify the
validity of each penetration as soon as possible
but notification must not exceed 30 calendar days.
• 20:1 Determined Invalid: Sponsor determines the
obstacle does not exist or it has been removed or
reduced in height that no longer penetrates the
20:1 surface. (Documentation Required).
• 20:1 Determined Valid: Sponsor determines the
obstacle does exist at the reported location/height.
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Airport Owner/Sponsor
Required Response
• If 20:1 penetrations determined INVALID: FPT will
notify applicable offices to update airport’s data file(s).
NOTAM action will not be taken to restrict or modify
Instrument Approach Procedure (IAP).
• If 20 to 1 penetrations determined VALID:
– Airport owner/sponsor submits written compliance plan.
– Airport owner/sponsor mitigates the penetration through
removal, lighting, reduction in height, or VGSI waiver.
– FAA action taken per Risk Assessment Criteria
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Alternate Mitigation Option using
Visual Glide Slope Indicator (VGSI):
• Temporary waiver good for 30 days while
obtaining Flight Standards Approval.
• VGSI Mitigation Requirements:
– Equipment Unrestricted & Clear OCS
– Angle of VGSI equal to or less than IAP angle
– TCH not more than 15 FT higher than IAP TCH
– Visual Descent Point (VDP) not published
– Visibility not lower than 1 SM.
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Alternative Mitigation Option using
Full-Scale Deflection of ILS/LOC/LPV/LP
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AeroNav Products Automatically Evaluates for this
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Obstacles Mitigated – NOW WHAT???
• Trees Removed: Notify FPT of tree removal. Include
Obstacle Identification (ID).
• Trees Trimmed: Notify FPT of completed tree
trimming. A stamped and signed survey must be
provided to support a new obstacle height.
– Obstacle ID with Coordinates
– Site Elevation with Accuracy Code (AC)
– Revised Tree MSL and AGL Height
• Structures Lighted: Notify FPT if the structure has been
lighted (Include the obstacle ID).
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Re-Evaluation of Night Restrictions
• Existing Night Restrictions: Contact FPT and ask for a
re-evaluation of your airport to determine if the new
surface area provides any relief to your airport.
• NOTAMs:
– If there are existing NOTAMs and it’s determined
the 20:1 penetrations are no longer applicable or
have been removed, the NOTAM can be cancelled
– If restrictions are already charted (NA at Night) and
it’s determined the restriction is no longer
applicable, it’s possible to regain night operations
through a temporary NOTAM followed by a chart
amendment.
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Questions?
Thank you
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Contact Info
• Cindy M Hintz
• Eastern Flight Procedures Team
• 404-305-5956, [email protected]
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