DEHAVILLAND DHC-3Promech Air, Inc.

Photographs of Exemplar Airplane — page 2 of 6 (1 of 2)Photographs of Exemplar Airplane — page 2 of 6 (2 of 2)Photograph 3- Photograph of interior cabin standing aft looking forward toward the cockpit. R4 — page 3 of 6 (1 of 2)Photograph 3- Photograph of interior cabin standing aft looking forward toward the cockpit. R4 — page 3 of 6 (2 of 2)Photograph 5- Photograph of L5 seat. — page 4 of 6 (1 of 2)Photograph 5- Photograph of L5 seat. — page 4 of 6 (2 of 2)Photograph 7- Photograph of right side cabin interior seats standing forward looking aft toward — page 5 of 6 (1 of 2)Photograph 7- Photograph of right side cabin interior seats standing forward looking aft toward — page 5 of 6 (2 of 2)Photograph 9- Photograph of stowed cabin interior seat with wired cable. — page 6 of 6 (1 of 2)Photograph 9- Photograph of stowed cabin interior seat with wired cable. — page 6 of 6 (2 of 2)Photo 1 – Passenger photo taken from preceding airplanePhoto 2 - Passenger photo taken from preceding airplanePhoto 3 - Passenger photo taken from preceding airplanePhoto 4 - Passenger photo taken from preceding airplanePhoto 5 - Passenger photo taken from preceding airplanePhoto 6 - Passenger photo taken from preceding airplanePhoto 7 - Passenger photo taken from preceding airplanePhoto 8 - Passenger photo taken from preceding airplanePhoto 9 - Passenger photo taken from preceding airplanePhoto 10 - Passenger photo taken from preceding airplanePhoto 11 - Passenger photo taken from preceding airplanePhoto 12 - Passenger photo taken from preceding airplanePhoto 13 - Passenger photo taken from preceding airplanePhoto 14 - Passenger photo taken from preceding airplanePhoto 1 – First passenger photoPhoto 2 – Second passenger photoPhoto 3 – Third passenger photoPhoto 4 – Fourth passenger photoPhoto 5 – Fifth passenger photoPhoto 6 – Sixth passenger photoPhoto 7 – Seventh passenger photoPhoto 8 – Eighth passenger photoPhoto 9 – Ninth passenger photoPhoto 10 – Tenth passenger photoPhoto 11 – Eleventh passenger photoPhoto 12 – Twelfth passenger photoPhoto 13 – Thirteenth passenger photoPhoto 14 – Fourteenth passenger photoPhoto 15 – Fifteenth passenger photoPhoto 16 – Sixteenth passenger photoPhoto 17 – Seventeenth passenger photoPhoto 18 – Eighteenth passenger photoPhoto 19 – Nineteenth passenger photoPhoto 20 – Twentieth passenger photoPhoto 21 – Twenty-first passenger photoPhoto 22 – Twenty-second passenger photoPhoto 23 – Twenty-third passenger photoPhoto 24 – Twenty-fourth passenger photoPhoto 25- Twenty-fifth passenger photo — page 26 of 30Photo 26 – Twenty-sixth passenger photoPhoto 27 – Twenty-seventh passenger photoPhoto 28 – Twenty-eighth passenger photoPhoto 29 – Twenty-ninth passenger photoPhoto 1 – Recent Logbook page 1Photo 2 – Recent Logbook Page 2Photo 3 – Recent Logbook Page 3Photo 4 – Recent Logbook Page 4Photo 1 – Photo of TAWS inhibit switch positionPhoto 1 – Terrain surrounding accident locationPhoto 2 - Terrain surrounding accident location (wreckage circled in yellow)Photo 3 - Terrain surrounding accident location (wreckage circled in yellow)Photo 4 - Terrain surrounding accident location (wreckage circled in yellow)Photo 1 – Approved Training DevicePhoto 2 - Approved Training DevicePhoto 3 - Approved Training DevicePhoto 4 - Approved Training DevicePhoto 5 - Approved Training DevicePhoto 6 - Approved Training DevicePhoto 7 - Approved Training DevicePhoto 8 - Approved Training DevicePhoto 9 - Approved Training DevicePhoto 10 - Approved Training DevicePhoto 1 – Wide view aerial photo of airplane at accident scene.Photo 2 – Close-up aerial photo of airplane at accident scene.Photo 3 – Airplane wreckage at accident scene.Photo 4 – Close-up of airplane wreckage at accident scene.Photo 5 – Photo at accident site looking toward Ella Lake.

Photographs are NTSB docket attachments — works of the US government, in the public domain. Captions are the Board’s own.

• A-17-035Open - Acceptable ResponseCLASS IIletter ↗

  TO THE FEDERAL AVIATION ADMINISTRATION: Implement ways to provide effective terrain awareness and warning system (TAWS) protections while mitigating nuisance alerts for single-engine airplanes operated under 14 Code of Federal Regulations Part 135 that frequently operate at altitudes below their respective TAWS class design alerting threshold.

• A-17-036Closed - Acceptable ActionCLASS IIletter ↗

  TO THE FEDERAL AVIATION ADMINISTRATION: Discuss at the next Ketchikan Air Safety meeting the database and software considerations for legacy Chelton systems and encourage operators to use the most current terrain database and electronic flight instrument system software.

• A-17-037Closed - Unacceptable Action/SupersededCLASS IIletter ↗

  TO THE FEDERAL AVIATION ADMINISTRATION: Work with members of the Ketchikan air tour industry to improve existing training programs aimed at reducing the risk of weather-related accidents involving continuation of flight under visual flight rules into instrument meteorological conditions, with special attention paid to the human factors issues identified in this investigation, including (1) the need to help pilots better calibrate what constitutes safe weather conditions to conduct flights based on objective standards and requirements, such as set criteria for what landmarks must be clearly visible from which locations in order to proceed on a particular route; (2) the need to help pilots who are new to the area recognize dynamic local weather patterns that can place them in a dangerous situation; and (3) operational influences on pilot decision-making. (Superseded by A-22-26)

• A-17-038Closed - Acceptable ActionCLASS IIletter ↗

  TO THE FEDERAL AVIATION ADMINISTRATION: Expand the application of Federal Aviation Administration Order 8900.1, volume 3, chapter 19, section 6, “Safety Assurance System: Flight Training Curriculum Segments,” paragraphs 3-1251(B) and 3-1252, which address controlled flight into terrain-avoidance training programs for 14 Code of Federal Regulations (CFR) Part 135 helicopter operations, to all 14 CFR Part 135 operations.

• A-17-039Closed - Unacceptable ActionCLASS IIletter ↗

  TO THE FEDERAL AVIATION ADMINISTRATION: Establish minimum initial and recurrent training requirements for personnel authorized to exercise operational control, including, but not limited to, approved subject knowledge areas, training hours, subject hours, and qualification modules.

• A-17-040Open - Unacceptable ResponseCLASS IIletter ↗

  TO THE FEDERAL AVIATION ADMINISTRATION: Publish an advisory circular that provides guidance on operational control best practices, including, but not limited to, such areas as risk mitigation strategies, joint flight safety responsibilities, prior experience of operational control personnel, and operational control personnel duty time limitations.

• A-17-041Closed - Unacceptable ActionCLASS IIletter ↗

  TO THE FEDERAL AVIATION ADMINISTRATION: Revise Federal Aviation Administration Order 8900.1 to include guidance for inspector oversight of operational control training program subject areas, including, but not limited to, the criteria for a qualification module.

• A-17-042Closed - Unacceptable ActionCLASS IIletter ↗

  TO THE FEDERAL AVIATION ADMINISTRATION: Analyze automatic dependent surveillance-broadcast (ADS-B) data from Ketchikan air tour operations on an ongoing basis and meet annually with Ketchikan air tour operators to engage in a nonpunitive discussion of any operational hazards reflected in the data and collaborate on mitigation strategies for any hazards identified.

• A-17-043Closed - Unacceptable Action/SupersededCLASS IIletter ↗

  TO THE FEDERAL AVIATION ADMINISTRATION: Develop and implement special operating rules for the Ketchikan air tour industry that include en route visual flight rules weather minimums that are tailored to the industry’s unique requirements and are more conservative than those specified in 14 Code of Federal Regulations Part 135. (Superseded by A-22-25)

• A-17-044Closed - Acceptable ActionCLASS IIletter ↗

  CRUISE LINES INTERNATIONAL ASSOCIATION: Encourage your members that sell air tours as shore excursions to review the circumstances of this accident and to consider ways to mitigate associated risks.