24 AUG, 2026                         Bangor, ME                         5 NMR – 4,999FT AGL   Specific instructions and restrictions are available at Federal Aviation Administration - Graphic TFRs once the NOTAM has been issued. *Depicted TFR data may not be a complete listing. Pilots should not use the information on this website for flight planning purposes. For the latest information, call your local Flight Service Station at 1-800-WX-BRIEF

26-28 AUG, 2026                         JACKSON HOLE, WY                         5 NMR – 4,999FT AGL   Specific instructions and restrictions are available at Federal Aviation Administration - Graphic TFRs once the NOTAM has been issued. *Depicted TFR data may not be a complete listing. Pilots should not use the information on this website for flight planning purposes. For the latest information, call your local Flight Service Station at 1-800-WX-BRIEF

TO: Aircraft Owners and Operators, Engine Overhaul Facilities, Engine Maintainers, Engine Manufacturers SUBJECT This Service Bulletin describes a potential cracking problem in specific lot numbers of Tempest® Spark Plugs manufactured between May 5, 2026 and July 29, 2026. It recommends immediate inspection of the affected spark plugs prior to your next flight and replacement of any cracked spark plugs. No action is required for Tempest® Spark Plugs purchased prior to May 5, 2026. REASON There have been limited reports of spark plugs exhibiting cracks. Failure to detect and replace a cracked spark plug could potentially result in damage to the airplane engine and possible loss of power. SCOPE This Service Bulletin applies to all Tempest® spark plugs bearing the part numbers and corresponding lot codes listed in Table 1 (page 2), regardless of date of installation, engine model, or airframe application. This is the original issue of SB-012. BACKGROUND There have been field reports of cracks in Tempest® spark plugs.  This condition has not previously been observed or reported in our production history. Upon notification of the issue, Tempest Aero Group initiated an investigation and identified the root cause. Tempest Aero Group has implemented the necessary corrective action to the manufacturing and inspection processes and is issuing this Service Bulletin to address any affected in-service spark plugs. See attached document for more information.

Notice: Expect VIP movement August 27-28, 2026 in the vicinity of Houston, TX. Pilots can expect temporary airspace restrictions in conjunction with this VIP movement.   The FAA recommends that all aircraft operators check NOTAMs OFTEN for temporary airspace restrictions prior to operations within this region. Specific instructions and restrictions are available at http://tfr.faa.gov* once the NOTAM has been issued.  *Depicted TFR data may not be a complete listing. Pilots should not use the information on this website for flight planning purposes. For the latest information, call your local Flight Service Station at 1-800-WX-BRIEF.

All pilots operating in the South Flordia area are reminded to adher to minimum safe altitudes, as outlined by FAA regulations. This is essential for maintaining public safety and reducing noise over our densely populated areas. Key Points to Remember: After takeoff, please climb to at least 1,000 feet Above Ground Level (AGL) as soon as practical and maintain compliance with 14 CFR 91.119. If you are flying over the ocean, you must reach 1,000 feet AGL before changing altitude after clearing the congested area. This Requirement will be closely monitored and enforced. Traffic Pattern Altitude: Maintain a traffic pattern altitude of 1,000 feet AGL Regulatory Requirement (14 CFR § 91.119): Over Congested Areas: Maintain an altitude of 1,000 feet above the highest obstacle within a horizontal radius of 2,000 feet of the aircraft, applicable to most of Fort Lauderdale's metropolitan area. Over Other Than Congested Areas: Maintain an altitude of 500 feet above the surface. Helicopters, Powered Parachutes, and Weight-Shift Control Aircraft: These may operate at lower altitudes if conducted safely and in compliance with FAA-prescribed routes or altitudes. Pre-flight Planning: Always review current sectional charts, digital obstacle data, and temporary flight restrictions (TFRs) before departure. Thank you for your attention to these important safety protocols. Your cooperation is vital to ensuring safe and efficient flight operations in the South Florida region. Fly safe and remain vigilant. Jimmey L. Mygatt Federal Aviation Administration FAASTeam Program Manager FPM FSDO-SO-19 2895 SW 145th Ave, Miramar, FL 33027 Office phone: 954-641-6193 Cell phone: 954-801-3062 jimmey.mygatt@faa.gov  

22-23 AUG, 2026                         Sterling, VA                         5 NMR – 9,999FT MSL   Specific instructions and restrictions are available at Federal Aviation Administration - Graphic TFRs once the NOTAM has been issued. *Depicted TFR data may not be a complete listing. Pilots should not use the information on this website for flight planning purposes. For the latest information, call your local Flight Service Station at 1-800-WX-BRIEF

US Helicopter Safety Team (USHST)  Monthly Safety Report August 2026 USHST Vision:  A civil registered helicopter community without fatal accidents US Helicopter Safety Team (USHST) Calendar Year Metrics The USHST’s 5-year goals for 2025-2029 are based on individual, 14 CFR Operating Parts, tracked by the 5-year average fatal accident rates per 100K hours.   14 CFR Part Baseline, CY2018-2022 (per 100K hours) Goal, CY2025-2029 (per 100K hours) Progress, CY2021-2025 (per 100K hours) 91 0.81 0.73 (10% reduction) 0.47 133 1.73 1.56 (10% reduction) 0.90­ 135 0.33 0.17 (50% reduction) 0.42¯ 137 1.11 1.00 (10% reduction) 1.10¯ USHST uses the following as conditions for the fatal accidents included in rate calculations:  U.S. registered aircraft, operating in the U.S./U.S. territories (includes offshore), not operating as Public Aircraft (public use) Helicopter - Safety Enhancement (H-SE) Details H-SE 2023-04, Improve fatigue awareness and risk mitigation of scheduling factors leading to fatigue Fatigue is an often underreported but significant risk factor in helicopter operations.  Since 1990, the NTSB has conducted 6,561 helicopter accident investigations.  While only 33 investigations explicitly cited fatigue or lack of adequate sleep as a contributing factor, this likely understates the true impact.  Based on benchmarks from other industries, fatigue is estimated to be a factor in 1 in 5 incidents.  Current subjective self-assessment approaches to fatigue management are problematic because:  People with sleep debt systematically underestimate their alertness deficits; fatigue changes risk perception, leading to greater risk acceptance; and individual thresholds for acceptable fatigue vary and may be influenced by production pressures. OUR SOLUTION ¨ White paper Conduct research and publish a white paper that communicates the need for an FRMP among rotorcraft operators. This will include a review of helicopter incidents investigated by NTSB.   Completed July 2025 ¨ FRMP checklist Develop a checklist to support rotorcraft operators in identifying the key components of a comprehensive FRMP to cover the range of fatigue risks in helicopter operations.   Completed June 2026 ¨ Case study Conduct with a rotorcraft operator adopting a comprehensive FRMP to serve as an industry guide.  ¨ Large-scale study on fatigue in air medical transport operations to gather  data tailored specifically to helicopter ops.     Please refer to USHST.org to view this entire safety report and its Calendar Year Metrics. For any questions regarding the information within this notice please contact Clarke Pleasants, Assistant Professor of Aerospace, MTSU, at 615-898-2054 or email at clarke.pleasants@mtsu.edu

FLIGHT ADVISORY GPS INTERFERENCE TESTING YUMA PROVING GROUND_ARIZONA (YPG_AZ) 26-07 (REVISION 3)   24 August – 04 September Yuma, AZ   The entire flight advisory may be accessed and downloaded at the following address: YPG AZ 26-07 GPS Flight Advisory (Revision 3)   Pilots are advised to check NOTAMs frequently for possible changes prior to operations in the area.   NOTAMs will be published at least 72 hours in advance of this event.  

Effective August 20th, 2026, The Runway Numbers in Nenana will be Amended as Per the NOTAM Listed Below.  ENN 08/016 ENN RWY 04L/22R CHANGED TO RWY 05L/23R 2608200100-PERM

FLIGHT ADVISORY GPS INTERFERENCE TESTING ELECTRONIC PROVING GROUND_ARIZONA (EPG_AZ) 26-09   20 – 27 August Fort Huachuca, AZ   The entire flight advisory may be accessed and downloaded at the following address: EPG AZ 26-09 GPS Flight Advisory   Pilots are advised to check NOTAMs frequently for possible changes prior to operations in the area.   NOTAMs will be published at least 72 hours in advance of this event.