Docket Contents

Project Summary: Rail Investigation - 43 Docket Items - RRD24FR017

Description: Derailment

Mode: Rail

NTSB Number: RRD24FR017

Date of Accident: 10/01/2024

City: Somerville

State / Region: MA

Country: United States

Project Type: Investigation


Docket Information

Creation Date: 10/09/24

Last Modified: 10/29/2025 1:25 PM

Public Release Date & Time: 09/30/2025 2:00 PM


Docket Items: 43

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Title

Pgs

Photo

Type

1 FINAL REPORT 8 0 Text/Image
2 PRELIM REPORT SOMERVILLE, MA 2 0 Text/Image
3 IIC SUMMARY OF THE ACCIDENT 2 0 Text/Image
4 TRANSCRIPT UPDATE ERRATA MASSDOT CSO 1 0 Text/Image
5 TRANSCRIPT UPDATE ERRATA MBTA COO 1 0 Text/Image
6 TRANSCRIPT OF INTERVIEW MBTA MOTORPERSON 2 34 0 Text/Image
7 TRANSCRIPT OF INTERVIEW MBTA MOTORPERSON 1 39 0 Text/Image
8 TRANSCRIPT OF INTERVIEW MASS DPU DIRECTOR RAIL TRANSIT SAFETY 39 0 Text/Image
9 TRANSCRIPT UPDATE ERRATA MASS DPU DIRECTOR RAIL TRANSIT SAFETY 1 0 Text/Image
10 TRANSCRIPT OF INTERVIEW MBTA CSO 77 0 Text/Image
11 TRANSCRIPT UPDATE ERRATA MBTA CSO 3 0 Text/Image
12 OPERATIONS FACTUAL REPORT 40 0 Text/Image
13 MOBILE PHONE RECORDS - SPECIALIST'S FACTUAL REPORT 7 0 Text/Image
14 MBTA OPERATING EMPLOYEE APPLICABLE RULES 28 0 Text/Image
15 OPERATIONS ALL OBSERVATIONS FOR MOTORPERSON1 AND 2 (PREVIOUS 365 DAYS) 2 0 Text/Image
16 MBTA STREETCAR MOTORPERSON JOB DESCRIPTION 3 0 Text/Image
17 OPERATIONS 2023 DPU TRIENNIAL AUDIT OF MBTA-- 117 0 Text/Image
18 TRACK - GEOMETRY CAR DATA 6-27-24 1 0 Text/Image
19 TRACK - MAINLINE GEOMETRY 6 0 Text/Image
20 TRACK - ROW SPEED LIMIT SIGN PLAN 1 0 Text/Image
21 TRACK - MATERIALS USED 1 1 0 Text/Image
22 TRACK - TRACK INSPECTION 9-30-24 1 0 Text/Image
23 TRACK - TURNOUT INSPECTION 8-20-24 2 0 Text/Image
24 TRACK - TRACK GROUP FACTUAL REPORT 8 0 Text/Image
25 MECHANICAL GROUP FACTUAL 6 0 Text/Image
26 MECHANICAL - FLEET INVENTORY 2 0 Text/Image
27 MECHANICAL - MAINTENANCE RECORDS 12 0 Text/Image
28 MECHANICAL - EQUIPMENT CONTRACT DATE 1 0 Text/Image
29 MECHANICAL - NO.7 VEHICLE SPECS 1 0 Text/Image
30 MECHANICAL - NO.8 VEHICLE SPECS 1 0 Text/Image
31 SIGNAL FACTUAL 8 0 Text/Image
32 RED BRIDGE FULL BOOK OF PLANS 140 0 Text/Image
33 RED BRIDGE CONTROL POINT 1 0 Text/Image
34 RED BRIDGE INTERLOCKING SIGNAL DOWNLOAD WITH COMMENTS 6 0 Text/Image
35 TRANSCRIPT OF INTERVIEW MASSDOT CSO 37 0 Text/Image
36 TRANSCRIPT OF INTERVIEW-MBTA NIGHT SHIFT SUPERVISOR- 40 0 Text/Image
37 TRANSCRIPT OF INTERVIEW MBTA COO- 69 0 Text/Image
38 TRACK - SWITCH DRAWING 3 0 Text/Image
39 OPERATIONS MBTA OPERATING EMPLOYEE SIGNAL PERFORMANCE TESTING PROCEDURE- 2 0 Text/Image
40 OPERATIONS MBTA INTERSECTION RULES COMPLIANCE TESTING PROCEDURE- 1 0 Text/Image
41 OPERATIONS MBTA RADAR SPEED TESTING PROCEDURES- 1 0 Text/Image
42 OPERATIONS MBTA SUPERVISOR CHECK RIDE PROCEDURE- 2 0 Text/Image
43 24 MONTH SIGNAL INSPECTION RECORD - 5 0 Text/Image