CVR transcript SAS Flight 751 - 27 DEC 1991
Cockpit voice recorder transcript of the December 27, 1991 accident of SAS Flight 751, a McDonnell Douglas MD-81 at Gottröra (Sweden).
The reader of these transcripts is cautioned that the transcription of a CVR tape is not a precise science but is the best possible product from a group investigative effort. The transcript, or parts thereof, if taken out of context can be misleading. Therefore, the CVR transcripts should only be viewed as an investigative tool to be used in conjunction with other evidence. Conclusions or interpretations should not be made using the transcript as the sole source of information.
Furthermore, this transcript is made available for educational purposes, so the reader is encouraged to read the accident description associated with the transcripts for better understanding of the circumstances.
Furthermore, this transcript is made available for educational purposes, so the reader is encouraged to read the accident description associated with the transcripts for better understanding of the circumstances.
Legenda
FC = Captain
FO = First Officer
FC2 = Captain coming into cockpit to assist during flight
CA1 = Cabin attendant no.1 / purser
CA2 = Cabin attendant no.2
CA3 = Cabin attendant no.3
CA4 = Cabin attendant no.4
TWR = Arlanda Tower
DEP = Stockholm Control
[] = interpreted information or additional information about the content
() = uncertain
?? = not interpreted due to disturbance
FC = Captain
FO = First Officer
FC2 = Captain coming into cockpit to assist during flight
CA1 = Cabin attendant no.1 / purser
CA2 = Cabin attendant no.2
CA3 = Cabin attendant no.3
CA4 = Cabin attendant no.4
TWR = Arlanda Tower
DEP = Stockholm Control
[] = interpreted information or additional information about the content
() = uncertain
?? = not interpreted due to disturbance
| time | source | content |
|---|---|---|
| 7:47:07 | rotation | |
| 7:47:10 | [A weak humming noise can be heard for a few seconds] | |
| 7:47:11 | FC | Gear up |
| 7:47:12 | FO | [Chime] - Gear up selected |
| 7:47:19 | [A faint 'rumbling' noise can be heard] | |
| 7:47:26 | DEP | Swedline 780 reduce to (old) speed |
| 7:47:30 | LF | Seven eight zero reducing |
| 7:47:31 | [1st engine surge] | |
| 7:41:34 | [Middle marker is heard for 16 seconds] | |
| 7:47:36 | FO | .. ?? .. ?? |
| 7:47:38 | [2nd surge] | |
| 7:47:39 | [Two 'clicks' from anti-ice switches] | |
| 7:47:41 | [3rd surge] | |
| 7:47:42 | FO | Tror det är... kompressorstall (Believe it is ... compressorstall] |
| 7:47:44 | [4th surge] | |
| 7:47:46 | [5th surge] | |
| 7:47:47 | [6th surge] | |
| 7:47:49 | [7th surge] | |
| 7:47:50 | [8th surge] | |
| 7:47:52 | [9th surge] | |
| 7:47:54 | FO | (Va är ..?? ... till det här.. ??) |
| 7:47:55 | [10th surge] | |
| 7:47:57 | [11th surge] | |
| 7:47:59 | [12th surge] | |
| 7:48:02 | [13th surge] | |
| 7:48:03 | [14th surge] | |
| 7:48:05 | [Warbler + Autopilot (autopilot disengage warning. This warning remains on for the rest of the flight, except when interrupted by other warnings] | |
| 7:48:07 | [16th surge]; surge no 16 starts here and is followed by several surges, partly disguised by the warnings | |
| 7:48:13 | [3x chimes (cabin to cockpit call)] | |
| 7:48:15 | CA2 | .... Halla ......... [about 10 sec of heavy noise from engine stalls in background] |
| 7:48:16 | DEP | Swedline 780 turn left heading heading 030, cleared for approach runway zero one |
| 7:48:21 | LF | Left heading 030, cleared for approach zero one, Swedline 780 |
| 7:48:22 | [chime (cabin to cockpit call)] | |
| 7:48:23 | [Last engine surge can be heard] | |
| 7:48:27 | DEP | Swedline 780 |
| 7:48:49 | FC | Engine relight, engine relight! |
| 7:48:32 | FO | Checked |
| 7:48:37 | [Fire bell (5 shot interval high pitch tones)+ fire left engine] | |
| 7:48:40 | FO | Ska jag dra? |
| 7:48:41 | [chime] | |
| 7:48:42 | [Switch of CVR tape direction] | |
| 7:48:44 | FO? | (Svarar vänstermotorn?) |
| 7:48:44 | FO | Arlanda.... Stockholm SK 74... 751 |
| 7:48:51 | DEP | Ja godmorgon SK751, climb to FL180, no speed restriction |
| 7:48:56 | FO | We have problems with our engines, please... [clicks from switches, talk and autopilot disconnect warning in the background]... we need to go back to, ... to go back to Arlanda |
| 7:49:02 | FC | (Har vi en) restart procedure? |
| 7:49:04 | ['Click' (from switch)] | |
| 7:49:05 | DEP | 751, roger, turn right heading 18... [power interrupts] ... turn righ... |
| 7:49:06 | [Two double chimes (bing-bong, bing-bong). CA2 caling CA1] | |
| 7:49:09 | FC2 | Titta [power interrupt] fram |
| 7:49:09 | [Electrical power interrupt no.1] | |
| 7:49:10 | CA1 | Jaa |
| 7:49:10 | [Electrical power interrupt no.2] | |
| 7:49:11 | [Electrical power interrupt no.3] | |
| 7:49:12 | [Electrical power interrupt no.4] | |
| 7:49:12 | [Electrical power interrupt no.5] | |
| 7:49:12 | CA | Ja |
| 7:49:12 | CA2? | Ja |
| 7:49:13 | FC2 | Titta takt fram |
| 7:49:13 | CA2 | Det är en... Jag tror att der är en pilot som sitter här bak, han säger att höger motor stallar jag vet inte vad det betyder |
| 7:49:13 | FC | Yes |
| 7:49:14 | [Electrical power interrupt no.6] | |
| 7:49:17 | CA1 | Ja, höger motor staller ...... [several power interrupts and chimes are heard; microphone is 'open' for about 17sec] |
| 7:49:18 | FC | (Prepare for emergency) |
| 7:49:19 | FC2 | Ja titta rak, titta rakt fram, titta rakt fram! |
| 7:49:22 | FC | Yes! |
| 7:49:24 | [One power interrupt followed by stabilizer motion horn] | |
| 7:49:27 | FC2 | Titta rakt fram! |
| 7:49:27 | [about 9 power interrupts during 7 seconds] | |
| 7:49:30 | ['Click' (from switch)] | |
| 7:49:31 | DEP | SK751 are you able to turn right heading 090 radar vectoring for zero one.... [several power interrupts] |
| 7:49:36 | [Last power interrupt that can be heard] | |
| 7:49:36 | CA1 | Höger motor staller [heard in background] |
| 7:49:37 | FO | Roger.. we are maintaining heading right now but we are trying to make a restart of the engines and make a slow turn to the left |
| 7:49:41 | FC | (Engine) restart checklist |
| 7:49:46 | DEP | Roger, you can maintain 2000ft also |
| 7:49:47 | [Noise from high energy ignition. On for the rest of the flight] | |
| 7:49:48 | FC2 | Titta rakt fram, titta rakt fram! |
| 7:49:50 | FC | Yes |
| 7:49:50 | FO | We are not able to maintain 2000ft, we are descending we are now at 1600 descending |
| 7:49:55 | [Stabilizer motion horn] | |
| 7:49:57 | FC | Prepare for an on ground emergency! |
| 7:50:02 | FC2 | Ja titta rakt fram titta rakt fram |
| 7:50:03 | LF | Swedline 780 established 01 |
| 7:50:05 | FC | Checked |
| 7:50:06 | DEP | 780 Tower 118.5 |
| 7:50:10 | LF | 118.5, hej |
| 7:50:10 | CA1 | Sätt dig i cockpit! [Asks FC2 to sit down] |
| 7:50:12 | FC | Prepare for on ground emergency! |
| 7:50:13 | FC2 | [Shouting] On ground emergency! |
| 7:50:15 | FC | On ground emergency! |
| 7:50:16 | FC2 | Titta rakt fr.., titta rakt fram! |
| 7:50:21 | DEP | Swedline 208, climb to Flight Level 190 |
| 7:50:24 | FC2 | Titta rakt fram |
| 7:50:24 | FC | Checked? |
| 7:50:25 | LF | Flight level 190, Swedline two three, correction 208 |
| 7:50:25 | [Horn and 'landing gear'] | |
| 7:50:28 | FC2 | Titta rakt fram, ... ut |
| 7:50:30 | [Horn and landing gear (intermittently with autopilot warning until end of flight)] | |
| 7:50:31 | CA1 | On ground emergency |
| 7:50:35 | FC | (Flaps eh eh) |
| 7:50:36 | FC2 | a vi har flaps, vi har flap, titta rakt fram, titta rakt fram! |
| 7:50:39 | FC | Yes |
| 7:50:42 | CA1 | Sätt dej ner |
| 7:50:43 | FC2 | Du fly..., nej du flyger |
| 7:50:44 | [Sound from switch?] | |
| 7:50:44 | FC | Yes |
| 7:50:45 | FC2 | Välj en plats, höger, höger, höger, ... höger, höger, ... styr höger, styr höger |
| 7:50:51 | CA1 | Keep your sear belts fastened |
| 7:50:51 | FC | ..Checked..checked |
| 7:50:53 | CA1 | Keep calm |
| 7:50:54 | FC2 | Ja rakt fram där, rakt fram där, rakt fram (rakt mot skogen) |
| 7:50:55 | [Too low gear (from GPWS)] | |
| 7:50:57 | FC2 | Ja rakt mot skogen |
| 7:50:57 | [Too low gear] | |
| 7:50:57 | FO | Ska vi ta ut hjulen? |
| 7:50:58 | CA1 | Bend down, hold your knees.. [chime]... ja |
| 7:50:58 | FC2 | Ja gear down, gear down |
| 7:50:59 | [Whoop- whoop pull up (Continues for 11 seconds and is then replaced by 'Sinkrate'] | |
| 7:50:59 | [Chime from gear down] | |
| 7:51:01 | FC2? | (Nä gear down??) |
| 7:51:03 | FC2 | Styr rakt fram |
| 7:51:04 | FC2 | ..??..?? [Could be: 'Upp(ge plats), upp(ge plats)' |
| 7:51:05 | FO | Och Stockholm SK751, vi havererar i marken nu |
| 7:51:06 | [Stabilizer motion horn] | |
| 7:51:10 | [Sink rate + 1 second Stabilizer motion horn + Sink rate] | |
| 7:51:12 | [3.40 seconds of sounds from crash] | |
| 7:51:15 | [End of recording] |
