M00146-E21-01_HQ_CHENG_FINAL.pdf

DEPARTMENT OF THE NAVY

NAVAL FACILITIES ENGINEERING SYSTEMS COMMAND

1322 PATTERSON AVENUE, SE SUITE 1000

WASHINGTON NAVY YARD DC 20374-5065

11000

CHENG/036

From: Chief Engineer, Naval Facilities Engineering Systems Command To: Chief Engineer, Naval Facilities Engineering Systems Command, Atlantic

Subj: UFC EXEMPTION REQUEST NUMBER M00146-E21-01 FOR APRON LAYOUTS

OF F-35B HANGARS FY19 P199 AND FY22 P197 AT MCAS CHERRY POINT

Ref: (a) MIL-STD-3007G Department of Defense Standard Practice - Unified Facilities

Criteria, Facilities Criteria and Unified Facilities Guide Specifications dated 01 Nov 19

(b) UFC 3-260-01 Airfield Planning and Design Change 1 dated 18 May 2020

(c) UFC 2-000-05N Facility Planning for Navy and Marine Corps Shore Installations

Series 200 dated 02 Feb 2021

Encl: (1) Commander, Naval Facilities Engineering Systems Command, Atlantic letter 11010

Ser 00025:CI45 dated 25 Jan 2021

(2) Commander, Naval Facilities Engineering Systems Command, Mid-Atlantic letter dated 20 Jan 2021

(3) Commanding Officer, Marine Corps Air Station (MCAS) Cherry Point UFC exemption request letter 11000 dated 12 Jan 21

(4) Commander, Naval Air Systems Command Airfield Safety Waiver CPT-35;

MILCON P-199/187 F-35 AIRCRAFT PARKING letter 11000, Ser AIR-V1.7/074, dated 01 Dec 2020

(5) Commanding General, Marine Corps Installations East-Marine Corps Base Camp Lejeune, Ser 11000 dated 15 Jan 2021

(6) Commander, Marine Corps Installations Command, Ser 11010/20 19 Feb 2021

(7) NAVFAC Cherry Point Temperature Hazard F-35 Plume Data from George

Malamos, NAVFAC Criteria Office incorporating data

(8) Lockheed Martin FRD Idle Engine Exhaust Plume Supplement revision 2 dated 26

Feb 20

1. Enclosures (1), (2) and (3) have been submitted in accordance with reference (a) and provide endorsement for the following three criteria exemptions to deviate from references (b) and (c) for the F-35 aircraft apron layout. The primary reasons for these criteria exemptions are to preserve the flight-line real estate to accommodate future aircrafts, allow for operational efficiency, limit neighboring facility encroachment, and reduce the impacts for air shows.

a. Allow F-35 aircraft to be parked 170 feet apart in the nose-to-nose configuration.

Reference (b), Table 6-9 Navy/Marine Corp Aircraft Parking Spacing 90-Degree parking, and reference (c), Table 11320-2 Parking Apron Spacing - Jet Aircraft: 90 Degree Parking, require the F-35 apron parking row spacing to be established as 200 feet apart (tail-to-tail or nose-to-nose).

Subj: UFC EXEMPTION REQUEST NUMBER M00146-E21-01 FOR APRON LAYOUTS

OF F-35B HANGARS FY19 P199 AND FY22 P197 AT MCAS CHERRY POINT

b. Reduce the width and eliminate the peripheral taxi lane leaving 115 feet between parking and hangar. Reference (c), paragraph 11320-10, requires a 150 feet wide peripheral taxiway between the hangar access apron and the first innermost row of aircraft parking on the apron. In addition, reference (c), paragraph 11340-1, requires an additional 50 feet for the hangar access apron resulting in a total of 200 feet between parking and hangar.

c. Exceed the minimum human exposure requirements and details of the excessive exposure expected at MCAS Cherry Point as provided in enclosure (7). Reference (b), paragraph B 7-5 Jet Blast Requirements, and reference (c), paragraph 11320-4.1, require the apron jet blast (parked and taxiing aircraft) to be limited to 100 degrees Fahrenheit or provide jet blast protection, and jet blast must be limited to 35 mph velocity for human exposure.

2. NAVAIR is the authority for aviation safety matters and NAVFAC fully endorses the NAVAIR Airfield Safety Waiver (ASW) CPT-35, enclosure (4), for this project. It is critical for the operating personnel to ensure the safety mitigations and protocols are followed as outlined within enclosure (4). These mitigations include use of Personal Protective Equipment (PPE), aircraft taxi protocols, and appropriate jet blast mitigations. Adherence to these mitigations are the responsibility of the operating personnel to reduce the risk to flight line personnel and must be followed, as specifically stated in ASW:

NAVAIR CPT-35: To permit F-35 aircraft to be parked at 170 feet nose-to-nose (150 feet between sunshades), as per enclosure (2). Additionally, allow the peripheral taxi lane to be reduced to 115 feet from the hangar, which results in an aircraft engine distance to the hangar door face of approximately 150 feet as it taxis outbound. Operators and flight line personnel should recognize the risk and mitigate where flight line personnel total ambient and excess thrust temperatures exceed 100 degrees F or 35 mph thrust.

3. References (b) and (c) provide guidance on general apron layout requirements that allow flexibility including use of bi-directional taxiways and accommodation of other aircrafts. These criteria exemptions will alter the apron layout and limit that flexibility for future changes, which may make it difficult to accommodate different aircraft in the future.

4. Per endorsements provided in enclosure (4), (5), and (6), all major operational stakeholders recognize the operational limitations and risks the criteria exemptions may present.

5. Based upon review of the information provided, the three UFC exemptions requests are APPROVED in accordance with the enclosure (4) to mitigate and minimize risks as much as possible. This exemption only relates to this specific subject project aircraft spacing and does not constitute approval for the use of permanent aircraft canopies or sunshades because those are equipment and not real property.

6. NAVAIR is requested to file this UFC exemption approval letter with enclosures (7) and (8) for future base awareness in the NAVAIR Infrastructure Business Operations Navy-NAVAIR- NAWC Support (IBONS) system with NAVAIR Air Safety Waiver CPT-35.

Subj: UFC EXEMPTION REQUEST NUMBER M00146-E21-01 FOR APRON LAYOUTS

OF F-35B HANGARS FY19 P199 AND FY22 P197 AT MCAS CHERRY POINT

7. If you have any questions or concerns with respect to the criteria, please contact Mr. George Malamos, NAVFAC Aviation Facilities Criteria Program manager and aviation criteria subject matter expert at (757) 322-4435.

R. DAVID CURFMAN, P.E.

Chief Engineer and Assistant Commander for Design and Construction

Copy to:

NAVFAC Atlantic, DC1 NAVFAC Atlantic OICC Florence NAVFAC Mid-Atlantic DC Commander, NAVAIR V1.7

MCI COM

MCI EAST

MCAS Cherry Point MCAS Cherry Point Operations Directorate MCAS Cherry Point Facilities Directorate MCAS Cherry Point Airfield Operations