Project Summary: Aviation Investigation - 106 Docket Items - DCA95MA054

Description: ATLANTIC SOUTHEAST AIRLINES Embraer -- EMB-120RT

Mode: Aviation

NTSB Number: DCA95MA054

Date of Accident: 08/21/1995

City: CARROLLTON

State/Region: GA

Country: United States

Project Type: Investigation

Docket Information

Creation Date: 01/16/1996

Last Modified: 06/17/2014 12:01 PM

Public Release Date & Time: 01/16/1996 11:43 AM


Docket Table of Contents

Docket Items: 106
#
Title
Pgs
Photo
Type
File
1 Operations 2A - Factual Report of Group Chairman 19 0 Adobe PDF file View
2 Operations 2B - Attachments 212 0 Adobe PDF file View
3 ATC 3A - Factual Report of Group Chairman 23 0 Adobe PDF file View
4 ATC 3A - Addendum to Group Chairman's Factual Report (Transcripts) 81 0 Adobe PDF file View
5 Meteorology 5A - Factual Report of Group Chairman 11 0 Adobe PDF file View
6 Meteorology 5B - Factual Report of Group Chairman, Attachment 1 2 0 Adobe PDF file View
7 Meteorology 5C - Factual Report of Group Chairman, Attachments 2-9 8 0 Adobe PDF file View
8 Survival Factors 6A - Factual Report of Group Chairman (added 3/11/96) 6 0 Adobe PDF file View
9 Structures 7A - Factual Report of Group Chairman 7 0 Adobe PDF file View
10 Structures 7A - Photo 01. Aerial view of accident site, looking northwest , with main wreckage in background. Arrows denote left wing/engine ("LW") and left propeller assembly ("P"). 1 0 Adobe PDF file View
11 Structures 7A - Photo 02. Ground view of final tree impacts, looking west/southwest. Note the tree swath angled down from left to right. 1 0 Adobe PDF file View
12 Structures 7A - Photo 03. Aerial view of main wreckage. 1 0 Adobe PDF file View
13 Structures 7A - Photo 04. Left engine and inboard section of left wing. 1 0 Adobe PDF file View
14 Structures 7A - Photo 05. Inward, upward crushing to left side of forward fuselage. 1 0 Adobe PDF file View
15 Structures 7A - Photo 06. top view of empennage. 1 0 Adobe PDF file View
16 Structures 7A - Photo 07. Right fuselage, engine, and wing. 1 0 Adobe PDF file View
17 Structures 7A - Photo 08. Reassembled left wing leading edge outboard of left engine. Inboard side abuts outboard side of engine nacelle. Opening in leading edge contains landing light. 1 0 Adobe PDF file View
18 Structures 7A - Photo 09. Inboard, aft side of left nacelle skin. 1 0 Adobe PDF file View
19 Structures 7A - Photo 10. Damage to middle hinges of left forward cowling doors. 1 0 Adobe PDF file View
20 Structures 7A - Photo 11. Frame 1 of left nacelle. Outboard member of frame is deformed aft approximately 90 degrees. Arrows denote location of inboard ("I") and outboard ("O") forward engine mounts (not shown). 1 0 Adobe PDF file View
21 Structures 7A - Photo 12. Frame 1 members from left and right nacelles. Arrows denote the torque mount assemblies on the right engine. 1 0 Adobe PDF file View
22 Structures 7A - Photo 13. View of front face of forward, inboard engine/gearbox mount bolt (left engine). 1 0 Adobe PDF file View
23 Structures 7A - Photo 14. View looking aft of left engine nacelle. Arrows denote aft cowlings ("A"), forward cowlings ("F"), engine air inlet fairing and forward portion of forward cowlings ("FC"), and frame 1 ("1") that wer 1 0 Adobe PDF file View
24 Structures 7A - Photo 15 & 16. Lower rod ends of the inboard and outboard torque mount assemblies, respectively. 1 0 Adobe PDF file View
25 Structures 7A - Photo 17. View looking down at forward, outboard engine/gearbox mount (left engine). Note aft deformation at fracture. 1 0 Adobe PDF file View
26 Structures 7A - Photo 18. View looking outboard of forward, outboard engine/gearbox mount bolt (left engine). 1 0 Adobe PDF file View
27 Structures 7B - Metallurgist's Factual Report 6 0 Adobe PDF file View
28 Structures 7B - Photo 1. Overall view of the camber side of the inboard piece of the blade. 1 0 Adobe PDF file View
29 Structures 7B - Photo 2. Arrow "O" indicates the origin area, arrow "R" indicates a ratchet mark, unlabeled arrowheads indicate fatigue propagation direction, and the dashed lines indicate the extent of the fatigue crack. 1 0 Adobe PDF file View
30 Structures 7B - Photo 3. Overall view of the outboard face of the fracture. Arrow "O" indicates the origin area and arrow "R" indicates the ratchet mark. (2X) 1 0 Adobe PDF file View
31 Structures 7B - Photo 4. View of the inboard piece of the blade, showing the area of most severe sanding marks on the taper bore surface near the fracture plane. Arrow "S" indicates sealant material. (2X) 1 0 Adobe PDF file View
32 Structures 7B - Photo 5. Oblique view of the origin area on the inboard piece of the blade, showing initiation areas ("01" and "02"), lead deposits ("L"), fracture surface damage ("D"), ratchet mark ("R"), and the location 1 0 Adobe PDF file View
33 Structures 7B - Photo 6. Fatigue origin area on the inboard blade piece, with arrows "01" and "02" indicating the fatigue area on each side of the ratchet mark (arrows "R"). Arrowheads on the fracture indicate fatigue propag 1 0 Adobe PDF file View
34 Structures 7B - Photo 7. Detailed view of the taper bore surface on the inboard blade piece in the vicinity of origin area "01" (bracket). The ratchet mark is partially visible at the upper left corner of the photograph. (35 1 0 Adobe PDF file View
35 Structures 7B - Photo 8. SEM backscatter electron image of the fracture surface in the vicinity of origin area "01" (bracket "01"). The dashed line indicates the extent of heavy oxide deposits. (43.3X) 1 0 Adobe PDF file View
36 Structures 7B - Photo 9. Higher magnification view of the mud-cracked appearance of the oxide deposits. (1,750X) 1 0 Adobe PDF file View
37 Structures 7B - Figure 10. EDS spectrum from the mud-cracked oxide deposits on the inboard piece of the blade. 1 0 Adobe PDF file View
38 Structures 7B - Photo 11. Overall view of the corrosion damage (between arrows "C") associated with origin area "01" (indicated by bracket "01"). Arrow "P" indicates a wide corrosion area also indicated by arrow "P" in figure 1 0 Adobe PDF file View
39 Structures 7B - Photo 12. Closer view of the corrosion damage at origin "01". Arrow "X" indicates the point of maximum penetration of the corrosion pitting. Smaller arrows on the fracture indicate crack propagation direction 1 0 Adobe PDF file View
40 Structures 7B - Photo 13. Corroded fatigue striation pattern, partially obscured by mud-cracked oxide deposits, near the origin area "01" on the inboard face of the fracture. The arrow indicates the direction of propagation. 1 0 Adobe PDF file View
41 Structures 7B - Photo 14. Corrosion pit (white area) at origin "02" on the outboard face of the fracture. Unlabeled arrowheads indicated crack propagation directions away from the origin area. (284X) 1 0 Adobe PDF file View
42 Structures 7B - Photo 15. Section "A-A" through fatigue origin area "01" (see figure 11 for location of section). Arrowheads indicate corrosion pits on the fracture. Taper bore surface is to the right. (500X, as-polished) 1 0 Adobe PDF file View
43 Structures 7B - Photo 16. Section "A-A" after additional step-polishing, showing a surface corrosion pit (double-headed arrow) and surface ("B") is to the right and the fracture is at the top of the photograph. (400X, as pol 1 0 Adobe PDF file View
44 Powerplants 8A - Factual Report of Group Chairman 17 0 Adobe PDF file View
45 Addendum A - Powerplant Group Factual Report 19 0 Adobe PDF file View
46 Attachment A - Addendum A - Powerplant Factual Report 97 0 Adobe PDF file View
47 Photo 1 Left Engine and Propeller-Propeller and Reduction Gearbox at accident site. 1 0 Adobe PDF file View
48 Photo 2 Left Engine and Propeller-Propeller spinner 1 0 Adobe PDF file View
49 Photo 3 Left Engine and Propeller-No. 2 propeller blade 1 0 Adobe PDF file View
50 Photo 4 Left Engine and Propeller-No.1 propeller blade taper bore and pitch change pin 1 0 Adobe PDF file View
51 Photo 5 Left Engine and Propeller-No.3 propeller blade taper bore and pitch change pin 1 0 Adobe PDF file View
52 Photo 6 Left Engine and Propeller-Spinner bulkhead, oil transfer tube, pitch change yoke and piston, and associated hardware 1 0 Adobe PDF file View
53 Photo 7 Left Engine and Propeller-Turbomachine at accident site 1 0 Adobe PDF file View
54 Photo 8 Left Engine and Propeller-Turbomachine at accident site 1 0 Adobe PDF file View
55 Photo 9 Left Engine and Propeller-Main and reduction gearbox magnetic chip detectors 1 0 Adobe PDF file View
56 Photo 10 Left Engine and Propeller-Low pressure impeller 1 0 Adobe PDF file View
57 Photo 11 Left Engine and Propeller-Low pressure turbine vane ring, upstream side 1 0 Adobe PDF file View
58 Photo 12 Left Engine and Propeller-High pressure turbine, downstream side 1 0 Adobe PDF file View
59 Photo 13 Left Engine and Propeller-First stage power turbine vane ring, downstream side 1 0 Adobe PDF file View
60 Photo 14 Right Engine and Propeller-Engine and propeller in nacelle at accident site 1 0 Adobe PDF file View
61 Photo 15 Right Engine and Propeller-Engine and propeller in nacelle at accident site 1 0 Adobe PDF file View
62 Photo16 Right Engine and Propeller-No. 2 propeller blade at accident site 1 0 Adobe PDF file View
63 Photo 17 Right Engine and Propeller-No.3 propeller blade at accident site 1 0 Adobe PDF file View
64 Photo 18 Right Engine and Propeller-No.1 propeller blade taper bore and pitch change pin 1 0 Adobe PDF file View
65 Photo 19 Right Engine and Propeller-The turbomachine, reduction gearbox and propeller 1 0 Adobe PDF file View
66 Photo 20 Right Engine and Propeller-Main and reduction gearbox magnetic chip detectors 1 0 Adobe PDF file View
67 Photo 21 Right Engine and Propeller-High pressure turbine and vane ring, downstream side. 1 0 Adobe PDF file View
68 Photo 22 Right Engine and Propeller-Low pressure turbine vane ring, downstream side 1 0 Adobe PDF file View
69 Photo 23 Right Engine and Propeller-Low pressure turbine, downstream stream side 1 0 Adobe PDF file View
70 Photo 24 Right Engine and Propeller-First stage power turbine, downstream side 1 0 Adobe PDF file View
71 Photo 25 Right Engine and Propeller-Second stage power turbine vane ring and interstage baffle, downstream side 1 0 Adobe PDF file View
72 Photo 26 Right Engine and Propeller-Second stage power turbine, upstream side 1 0 Adobe PDF file View
73 Systems 9A - Factual Report of Group Chairman 10 0 Adobe PDF file View
74 Systems 9A - Photo 01. Main Wreckage Site 6 0 Adobe PDF file View
75 Systems 9A - Photo 02. View from Cabin looking forward toward the cockpit 1 0 Adobe PDF file View
76 Systems 9A - Photo 03. Main Instrument Panel 1 0 Adobe PDF file View
77 Systems 9A - Photo 04. Overhead Control Panel 1 0 Adobe PDF file View
78 Systems 9A - Photo 05. Throttle Quadrant 1 0 Adobe PDF file View
79 Systems 9A - Photo 06. View of FDR rudder pedal potentiometer installation 1 0 Adobe PDF file View
80 Flight Data Recorder 10A - Factual Report of Group Chairman 8 0 Adobe PDF file View
81 Flight Data Recorder 10B - FDR Report Attachments 7 0 Adobe PDF file View
82 Flight Data Recorder 10C - Tabular Data Printout 94 0 Adobe PDF file View
83 Maintenance Records 11A - Factual Report of Group Chairman 10 0 Adobe PDF file View
84 Maintenance Records 11B - Attachments 26 0 Adobe PDF file View
85 Addendum to Maintenance Records Group Chairman's Factual Report 1 0 Adobe PDF file View
86 Maintenance Records 11C - Propeller Maintenance Factual Report 29 0 Adobe PDF file View
87 Maintenance Records 11D - Propeller Maintenance Attachments 30 0 Adobe PDF file View
88 Propeller Maintenance Group Chairman's Factual Report - Addendum A 26 0 Adobe PDF file View
89 Cockpit Voice Recorder 12A - Factual Report of Group Chairman 30 0 Adobe PDF file View
90 Aircraft Performance 13A - Factual Report of Group Chairman 8 0 Adobe PDF file View
91 Aircraft Performance 13B - Section I Attachments - Airplane Radar Data 19 0 Adobe PDF file View
92 Aircraft Performance 13C - Section II Attachments - Weather Data 3 0 Adobe PDF file View
93 Aircraft Performance 13D - Section III Attachments - Propeller Trajectory Calculations 8 0 Adobe PDF file View
94 Aircraft Performance 13E - Section IV Attachments - Data Plots 13 0 Adobe PDF file View
95 Aircraft Performance 13F - Section V Attachments - A/C Ground Track & Flightcrew Dialogue 7 0 Adobe PDF file View
96 Aircraft Performance 13G - Section VI Attachments - EMB-120 Flight Simulation Data 5 0 Adobe PDF file View
97 Correspondence: Submission by Embraer Aircraft Corporation date May 31,1996 pursuant to 49CFR 831.14, Proposed Findings 47 0 Adobe PDF file View
98 Correspondence: Submission by Atlantic Southeast Airlines, Inc. dated May 31, 1996 pursuant to 49CFR 830.14, Proposed Findings 21 0 Adobe PDF file View
99 Correspondence: Submission by Association of Flight Attendants dated June 5, 1996 pursuant to 49CFR 831.14 Proposed Findings 4 0 Adobe PDF file View
100 Correspondence: Submission by Airline Pilots Association dated June 5, 1996 pursuant to 49CFR 831.14 Proposed Findings 78 0 Adobe PDF file View
101 Correspondence: Aviation Ocurrance Report #A94Q0037 issued by Transportation Safety Board of Canada, Inter-Canadien ATR42-300,C-GIQV VAL D'OR, QUEBEC, 13 March 1994 22 0 Adobe PDF file View
102 Correspondence: Final Report of Accident, Luxembourg Aug. 3, 1995 EMB-120, LX-LGK 37 0 Adobe PDF file View
103 Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 7 0 Adobe PDF file View
104 Statement of Party Representatives and ICAO Accredited Representative to NTSB Investigation 3 0 Adobe PDF file View
105 Release of Aircraft Wreckage, NTSB Form 6120.15 11 0 Adobe PDF file View
106 Video presented at Board Meeting for subject accident 1 0 Adobe PDF file View