§831.9. Authority during investigations. — Inbound Citations

(b) Pursuant to § 831.9 of this part, a credentialed employee of the NTSB is authorized to examine or test any civil or certain public aircraft, aircraft engine, propeller, appliance, or property aboard such aircraft involved in an accident or incident subject to the NTSB's authority.

(b) Pursuant to § 831.9 of this part, a credentialed employee of the NTSB is authorized to examine or test any item, including any vehicle, part of a vehicle, equipment, or contents of any vehicle or equipment involved in an accident subject to the NTSB's authority. Examination or testing will be conducted—

(1) To the extent practicable, so as to not interfere with or obstruct the transportation services provided by the owner or operator of a vehicle or equipment; and

(2) In a manner that preserves evidence relating to the transportation accident, in cooperation with the owner or operator of the vehicle or equipment, and consistent with the needs of the investigation.

(b) Pursuant to § 831.9 of this part, during an investigation, a credentialed employee of the NTSB is authorized to examine or test any rolling stock, track, or pipeline component, or any part of any such item (or contents therein) when such examination or testing is determined to be required for purposes of such investigation. Examination or testing will be conducted—

(1) To the extent practicable, so as to not interfere with or obstruct the transportation services provided by the owner or operator of such rolling stock, track, signal, rail shop, property, or pipeline component; and

(2) In a manner that preserves evidence relating to the transportation accident consistent with the needs of the investigation.

(4) As indicated in § 831.9(c) of this part, the NTSB has exclusive authority to decide when and how the testing and examination of evidence will occur.