Transcript Airport 20 to 1 Approach Surface

Federal Aviation
Administration
Airport 20 to 1
Approach Surface
Georgia Airports Association (GAA)
Annual Workshop
Cindy M Hintz
Eastern Flight Procedures Team
March 14, 2014
20:1 Approach Penetrations
• Criteria developed by Flight Standards in the late 1990s
• Requires clear 20:1 approach surface for night
minimums
• Visual aids (VGSI) such as VASI or PAPI were
designated as a possible mitigation
• All terminal procedures are currently reviewed every
two years, as required by AFS policy.
• During that periodic review, or other amendments, the
TERPS Specialist in AeroNav Products may identify
obstacles that penetrate the 20:1 visual surface.
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20:1 Penetrations (continued)
• Background: During Oct 2012, Flight Standards
Division AFS-400 required immediate NOTAM action
resulting in “Not Authorized (NA) at night when 20:1
identified.
• Current Policy: Effective Jan 6, 2014, refined policy
considered “Risk” factor of the identified penetrations
and allowing a validation period (30 days).
• Validation: To verify if the obstacle exists or has been
removed, and/or if the obstacle is lighted.
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20 to 1 Approach Surface (TERPS)
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20 to 1 Penetrations
• Identified/reported by various offices:
EFPT, ANP, GDOT, FC and soon,
Geographic Information System (GIS) tool
- Mandatory biennial reviews / OKC ANP
- During instrument procedure amdts
• Result in loss of night time capability
• Daytime visibility restricted to 1 SM
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Identification of 20 to 1 Penetrations
Typical scenario:
• During biennial review of airport’s procedure(s)
OKC development branch identifies non-validated
penetrations.
- - Specialist’s findings are forwarded to EFPT,
assigning each penetration with risk assessment of
high, medium or low.
- - EFPT adds GoogleEarth overlay to the file (.kml)
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20 to 1 penetrations (cont)
- - Within 3-business days, file is forwarded to airport
requiring sponsor to validate each penetration ASAP,
but no more than 30-days / ADO copied
• Airport owner/sponsor must provide a written
report and copy ADO
• No response received within prescribed timeframe
will result in IAP visibility minima and night
capability as required.
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Airport Owner / Sponsor Response
• If 20 to 1 penetrations determined invalid
- - EFPT will notify applicable offices to update
airport’s data file(s); no action required to restrict
or modify subject IAP.
• If 20 to 1 penetrations determined valid:
- - Submit written compliance plan
- - Remove, light or lower
- - Actions taken per risk Assessment criteria
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Possible Mitigation Actions
• Visual Glideslope Indicator (VGSI)
- Apt Mgr submits Form seeking AFS approval
• Apply ILS / LOC / LPV / LP Full-Scale Deflection
- Calculation, conducted by ANP when trying to
mitigate 20:1 penetration vs restricting night mins
• Restrict only CAT C/D approach category
minimums vs restricting CAT A/B/C/D
- If penetrations are outside CAT A/B area
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Mitigate by Aircraft Category
• Most common GA 20 to 1 issue
- - Runway type often, e.g., BII
- - Charted minima CAT C/D
- - CAT A/B begins at +/- 200 FT
- - CAT C/D begins at +/- 400 FT
• Airport cannot clear larger surface area
- - Other mitigation N/A (VGSI/Deflection)
- - Restrict CAT C/D minima only
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Jim Hamilton L.B. Owens (KCUB), SC
• RWY 31 20 to 1 penetrations
- Clearing project lasting several years
- Received official notification
- Provided compliance plan, VGSI checklist and
initiated flight check within 30 day window
- EFPT forwarded to OKC requesting temporary
VGSI mitigation and requested OKC ANP perform
check of full-scale deflection and evaluate CAT
A/B vs CAT C/D penetration(s)
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VDP or DA
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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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