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| Date: | Thursday 25 April 1985 |
| Time: | 10:45 LT |
| Type: |  Boeing 747-123 |
| Owner/operator: | National Airlines |
| Registration: | N9663 |
| MSN: | 20102/59 |
| Year of manufacture: | 1970 |
| Total airframe hrs: | 38827 hours |
| Engine model: | P&W JT9 |
| Fatalities: | Fatalities: 0 / Occupants: 481 |
| Other fatalities: | 0 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | Detroit, MI -
 United States of America
|
| Phase: | Standing |
| Nature: | Passenger - Non-Scheduled/charter/Air Taxi |
| Departure airport: | Detroit, MI (KDTW) |
| Las Vegas-McCarran International Airport, NV (LAS/KLAS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE FLT CREWMEMBERS OF THE JUMBO JET WERE PREPARING TO START THE ENGS WHEN FLT ATTENDANTS (F/A'S) IN THE FORWARD CABIN DETECTED A FAINT ODOR PRIOR TO CLOSING DOOR 1L. THE SOURCE COULD NOT BE DETERMINED, SO THE DOOR WAS CLOSED IN PREPARATION FOR A PUSHBACK. SHORTLY THEREAFTER, SMOKE WAS DISCOVERED IN THE VICINITY OF THE OVERHEAD BIN AT ROW 16. THE CAPTAIN WAS NOTIFIED & HE ORDERED THAT 'OCCUPANTS EVACUATE, IF THERE IS A FIRE ONBOARD.' THE JETWAY WAS BROUGHT BACK TO DOOR 1L. THE SMOKE DISSIPATED; THUS, THE F/A'S AT DOORS 1R, 2L & 2R DID NOT OPEN THEIR DOORS. HOWEVER, THE F/A'S AT THE OTHER 6 DOORS WERE UNAWARE OF THE SITUATION & CONTINUED THE EVACUATION. THE RAMPS AT DOORS 3L & 3R DID NOT INFLATE & DOOR 5R JAMMED HALFWAY OPEN. THE RAMP PACKS FOR 3R & 3L WERE IMPROPERLY MOUNTED. THE 5R PACK BOARD WAS MADE FOR A LEFT HAND DOOR & THE LANYARD WAS NOT CONNECTED TO THE BOTTOM PANEL PULLEY. AN EXAM REVEALED A BALLAST FOR AN OVERHEAD FLOURESCENT LIGHT, PN 69-33C, HAD OVERHEATED & MELTED THE PLASTIC CASE.
Findings
1. (C) PASSENGER COMPARTMENT LIGHT(S) - OVERTEMPERATURE
2. (F) MAINTENANCE,SERVICE BULLETIN/LETTER - NOT FOLLOWED - COMPANY/OPERATOR MANAGEMENT
3. FUSELAGE,CABIN - SMOKE
4. EMERGENCY PROCEDURE - PERFORMED
5. (F) MISC EQPT/FURNISHINGS,SLIDES - INOPERATIVE
6. (F) MAINTENANCE,INSTALLATION - IMPROPER - COMPANY MAINTENANCE PERSONNEL
7. (F) DOOR,EMERGENCY EXIT - IMPROPER
8. (F) MAINTENANCE,INSTALLATION - IMPROPER - COMPANY MAINTENANCE PERSONNEL
9. (F) DOOR,EMERGENCY EXIT - JAMMED
Accident investigation:
 |
|
Sources:
NTSB DCA85IA019
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 30-Mar-2024 10:41 | ASN Update Bot | Added |
| 31-Mar-2024 15:50 | ASN | Updated [Cn, Operator, Nature, Narrative, ] |
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