Docket No. -- SA-422
Exhibit No. -- 12B
NATIONAL TRANSPORTATION SAFETY BOARD
Bureau of Aviation Safety
Washington, D.C. 20591
COCKPIT VOICE RECORDER SPECIALIST'S FACTUAL REPORT OF INVESTIGATION
By Robert D. Rudich
SPECIALIST'S FACTUAL REPORT OF INVESTIGATION
COCKPIT VOICE RECORDER
Location: Huntington, West Virginia
Date: November 14, 1970
Aircraft: Douglas DC-9-31, N97S, Southern Airways Charter Flight 932
The cockpit voice recorder, although having been substantially damaged externally as a result of impact forces, yielded a satisfactory tape, the communications on which are summarized in the attached transcription.
D. DETAILS OF INVESTIGATION
Installed aboard N97S at the time of the accident was a Collins Model 642-c-1 cockpit voice recorder (CVR), serial number 508. The unit was removed from the aircraft wreckage subsequent to the accident and transported to the Washington Office of the Bureau of Aviation Safety for examination.
Inspection of the CVR revealed that it had incurred considerable damage to the rear electronics package as a result of impact forces. There was no evidence of fire damage. The dust cover was cut away and the stainless steel protective cover removed from the tape package. No damage was noted within the protective steel case. The tape was removed and played for the purpose of preparing rerecordings and the transcription which appears as an attachment to this report.
The tape, during playback, evidenced considerable wow and flutter, indicating a mechanical distress condition during the time that it was recorded. There was marked interference from background noise as well as from communications emanating from the cockpit speakers.
Timing indicated on the attachment is cumulative, starting from the reference point shown, and has not been related to real time. Voice identification was accomplished through the assistance of Southern Airways flight crewmembers, who are familiar with the voices of all three occupants of the flight deck of N97S.
Robert D. Rudich
Air Safety Investigator (Operations)
TRANSCRIPTION OF COCKPIT VOICE RECORDER TAPE -- DOUGLAS DC-9,
N97S, HUNTINGTON, WEST VIRGINIA, NOVEMBER 14, 1970, DCA 71-A-5
% = Break in continuity
CAM = Cockpit area microphone sound source
RDO = Radio transmission from N97S
-1 = Voice identified as Captain
-2 = Voice identified as First Officer
-3 = Voice identified as Additional Crewmember
-? = Voice unidentified
HTS = Huntington Approach Control
IND = Indianapolis Center
* = Unintelligible word or phrase
() = Words within parentheses are subject to further interpretation
CRW = Charleston Tower
TIME SOURCE CONTENT
0:00 RDO-1 Charleston Tower, this is Southern nine thirty-two
CRW Southern nine thirty-two, Charleston Tower
RDO-1 We're going over to Huntington, we passed just south of Charleston. What kind of weather you got down there now?
CRW Charleston weather estimated ceiling six thousand broken, visibility four, ground fog and smoke
RDO-1 What's your spread?
CRW Temperature five zero, dew point four nine
RDO-1 Thank you
RDO-1 Look like it's going to hold up a while?
CRW Sure thing
CAM-2 Sounds like a gal
CAM-1 It is
CAM-1 Broken up here at Charleston
CAM-2 Yeah, it's gotten a lot better. Maybe it's gotten better over here, it's not too far away
% % %
CAM-1 You might try it again
RDO Sound of tuning of ADF
% % %
2:00.3 RDO-2 Southern nine thirty two out of eleven thousand five hundred
% % %
CAM-1 Approach plate's two years old
CAM-2 Yeah * * * *
CAM-2 On these charter kits they don't keep those things up like they're supposed to
CAM Sound of laughter
CAM-1 How many miles you got to Pulaski?
CAM-2 About to run out * * *
CAM-2 It's pointing that way, Frank. Can't get a code on it, though
CAM-1 Let's run the rest of the in-range check
CAM-1 How many miles you got on it? I can't * * * it's gone off
CAM-2 Yeah, it's gone off
CAM-2 (Bugs) one two three
CAM-1 Put Charleston on yours * * *
RDO-2 Center, Southern nine thirty two
4:57.4 IND Southern nine thirty two, descend and maintain five thousand, say again
5:02.8 RDO-2 Okay, Southern nine thirty two, we're out of eight now, we're going to five, and approximately how far do you show us from the Huntington Airport?
5:09.8 IND Nine thirty-two approximately twenty miles southeast of Huntington Airport
IND Southern nine thirty two squawk zero four zero zero, contact Huntington Approach Control one two zero point niner, radar service terminated.
RDO-2 One two zero point nine, good day sir
CAM-1 Here we go
RDO-2 Huntington Approach, Southern nine thirty two, we're descending to five thousand
HTS Southern nine thirty two, Huntington Approach Control, you're cleared for an approach, correction, you're cleared for a localizer one one approach, the surface wind's favoring runway two nine, wind three five zero degrees at six, altimeter two nine six seven, report leaving five thousand. I'll give you the weather shortly.
RDO-2 Okay, we got the altimeter and we'll check with you leaving five thousand, we plan on approach to one one
RDO Sound of ILS localizer identification
HTS Southern nine thirty two, the Huntington weather three hundred scattered, measured ceiling five hundred variable broken, one thousand one hundred overcast, visibility five, light rain, fog, smoke.. Ceiling ragged, variable four to six hundred.
RDO-2 Very well, thank you sir
CAM-1 Very well!
CAM Sound of laughter
CAM-1 Very well?
CAM-2 Four hundred and twelve
CAM-1 Yeah, and a mile visibility
CAM-2 He said the visibility was * *
CAM-2 I'll ask him again
RDO-2 What's your visibility again?
CAM-1 * * * and twenty-six hundred from all directions
HTS Visibility five, light rain, fog, smoke
CAM-1 Right on the ----------- right on the minimums * * *
CAM-1 See if you can get that thing tuned in a little bit better, sort of wavering
CAM-2 All right
7:15.8 RDO-2 Southern nine thirty two is out of five
HTS Out of five, report outer marker outbound
RDO Sound of ILS outer compass locator identification
CAM-2 Localizer is one oh nine nine, ---- one fourteen inbound
CAM-1 Wonder how many miles it is to Kanawha?
CAM-2 Stand by
CAM-2 Charleston's not but about fifty miles
CAM-1 You got Charleston set on yours?
CAM-2 Charleston's set on * * * about thirty * * *
CAM-1 Damn close
CAM-2 Ought to be getting pretty damn close 'cause he gave us twenty miles right back there. That's been four or five minutes
CAM-2 You're getting slant ---- slant range on it
CAM-2 * * *
CAM-2 Marker's identified
% % %
9:24.6 CAM-2 Forty-two DME. How many you got?
CAM-1 Thirty seven
CAM-1 Coming over middle marker
9:43.2 CAM-2 Middle marker there
CAM-3 Frank, you want full fuel load out of here?
CAM-1 Might as well
CAM-2 Minimum is nineteen ---- wonder how much they'll charge us?
CAM-3 Well, we get contract price, whatever that is, whatever we pay for it
CAM-2 We got a mile or two to go, Frank, 's all
CAM-1 We're showing on the localizer
CAM-3 Hope we don't have this all the way in. It's rough
10:59.0 CAM-2 There she is
RDO-2 Southern nine thirty two, we're over the marker now, proceeding outbound
HTS Southern nine thirty two, roger, report the marker inbound
(Note: Underlined words above and below spoken simultaneously)
CAM-1 Slats and five
RDO-2 Very well
11:11.1 CAM-1 Slats and five
11:35.7 CAM-1 (From the) lights on the ground (it looks like) fog
CAM-2 Makes it sorry, doesn't it?
CAM-1 You checked the missed approach?
CAM-2 All right, you pull up to twenty-seven hundred feet by the east course of the ILS to Shoals, Shoals Fan Marker, report Shoals then straight out * * *
CAM-2 Sound of laughter
CAM-2 Well, I don't know
13:03.1 CAM-2 (I believe) half those lights should be off to our left. Kinda hard to say, though
13:43.7 CAM-1 We're in a rainshower, all right
CAM-2 Yeah, I know it
13:49.7 CAM-1 We sure are. The temp (is dropping)
CAM-2 Yeah, ah, that rain is (mixed) in with fog
CAM Sound of windshield wipers commences
CAM Sound of landing gear in transit commences
CAM-2 Okay, you got the no smoking, ignition, radar standby, auto shutoff armed, waiting on the gear ---- got the spoilers?
CAM Sound of click similar to that of arming spoilers
CAM-2 Checked, out
14:26.3 CAM-1 That thing captured! How did it capture?
CAM-2 Yeah, it ought to
CAM-1 You getting a glide slope capture and you ain't got a glide slope
CAM-2 I might capture on the, ah, on ILS, ah, Frank, regardless of glide slope. I don't have no capture, though
14:49.9 CAM-1 Okay, give me, ah, twenty five *
CAM-2 Yeah, it's good, it's got the capture
CAM-1 I got it cut off there now
CAM-2 Got twenty-five flaps, all is squared
CAM-1 We ought to be over the outer marker at twenty --- two hundred feet *
CAM-3 I'm sorry, Frank
CAM-1 You going to call out minimums?
CAM-2 Yeah, I sure will. I'll sing 'em out to you
CAM-2 As you get on down it, ah, this rough air ought to give us a little break
CAM-1 Well, if it's like he said, it's not blowing any harder than he says it is, why ----
CAM-2 Down draft
CAM-1 It took us down to the marker level
CAM-? Yeah, that's enough
16:18.9 CAM-1 Must be a little rainshower
16:20.0 CAM-2 Back in the soup
CAM-1 Jerry, I'm going to be flying about one thirty
CAM-2 I'm going to check the time for you. It'll be about two minutes from the, ah, outer marker *
16:43.5 RDO Sound of outer marker begins
16.48.0 RDO Sound of outer marker ceases abruptly
RDO-2 Southern nine thirty two the marker inbound
HTS Southern nine thirty two is cleared to land. You can advise on the lights, the wind is now three four zero degrees seven
16:58.8 CAM Sound similar to click of flap selector
RDO-2 Okay, the lights be good about step three, I guess
HTS Roger, that's where they are, with the rabbit. Advise when you want them cut
RDO-2 Very good
17:09.1 CAM-2 On the bug
CAM-3 * rough
CAM-1 This autopilot ain't responding just right ---- sluggish
CAM-1 Might catch up
CAM-2 Okay, I got the time for you
17:31.3 CAM-2 A thousand feet above the ground, rate and speed good
CAM-2 Speed a little fast, looks good, (17:43.6) got but and twelve
17:53.7 CAM-1 See something?
CAM-2 No, not yet. It's beginning to lighten up a little bit on the ground here at, ay, ah, (17:58.2) seven hundred feet
18:00.0 CAM-2 Bug and five
18:04.4 CAM-2 We're two hundred above
18:08.3 CAM-3 Bet 'll be a missed approach
18:14.6 CAM-2 Four hundred
18:16.2 CAM-1 That the approach?
18:18.9 CAM-2 Hundred and twenty six
18:21.7 CAM-2 HUNDRED
18:21.7 CAM Sounds of impact begin
18:27.7 End of recording