Boeing 727-100 N721PC
30 September 1985 · Denver, Colorado, United States · No injuries
Summary
On 30 September 1985 at about 00:40 local time, a Boeing 727-100 registered N721PC was involved in an incident near Denver, Colorado, United States. 71 people were on board and nobody was injured. The aircraft was slightly damaged. No probable cause statement is available for this record.
The record
- Date
- at 00:40
- Classification
- Incident
- Location
- Denver, Colorado, United States
- Nearest airport
- Stapleton (DEN)
- Coordinates
- 39.7294, -104.9195
- Aircraft
- Boeing 727-100
- Registration
- N721PC
- Category
- Airplane
- Engines
- 3
- Operator
- Not recorded
- Operating rule
- Part 121: Air Carrier
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Route
- Puerto Vallarto → Unknown
- Aircraft damage
- Minor
- Weather
- VMC
- Light
- Dusk
- NTSB number
- DEN85IA250
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 71 | 0 | 0 | 0 | 71 |
Probable cause
The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.
Nothing about the cause is stated here that is not in the source record.
Read the full NTSB narrative
DURING GEAR EXTN FOR LNDG, THE FLT CREW NOTED A 'LOUD & VERY NOTICEABLE JOLTING OF THE ACFT.' SHORTLY THEREAFTER, THEY ALSO NOTICED THAT A PORTION OF THE RIGHT MAIN GEAR HAD PUNCTURED THE UPPER SURFACE OF THE RGT WING. THE CREW THEN DECLARED AN EMERGENCY & MADE AN UNEVENTFUL LNDG. AN INVESTIGATION REVEALED THE RGT MAIN GEAR ACTUATOR SUPPORT LINK, PN 65-19657-5, HAD BECOME CORRODED & FAILED. THE OUTBOARD END OF THE MAIN GEAR ACTUATOR BEAM THEN PUNCTURED THE UPPER WING PANEL. ALSO A HYDRAULIC LINE WAS SEVERED, WHICH DISABLED THE 'A' HYDRAULIC SYS. MAINTENANCE RECORDS FROM THE PREVIOUS ACFT OWNER ERRONEOUSLY INDICATED THAT IN 1971, THE FAILED PART HAD BEEN REPLACED WITH A NEWER LINK ASSEMBLY, PN 19657-11, WHICH DID NOT REQUIRE AN INSPECTION. CONSEQUENTLY, THE REQUIRED INSPECTIONS SPECIFIED IN AD 68-17-01, REGARDING THE FAILED LINK, HAD NOT BEEN COMPLIED WITH BY THE NEW OWNER. BOEING HAD ISSUED A SVC BULLETIN (727-32-306) WHICH RECOMMENDED THAT LINK ASSEMBLIES WITH PN 19657-5 (AS WELL AS -4, -8 & -13) BE REMOVED FROM SVC & DISCARDED.
Quoted verbatim from the NTSB record.
Other Boeing 727 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 16 Apr 1985 | Boeing 727-200 | Washington, District of Columbia, United States | - | No injuries | - |
| 11 Aug 1985 | Boeing 727-225 | Richmond, Virginia, United States | Eastern Airlines, Inc. | No injuries | - |
| 1 Jan 1985 | Boeing 727-225 | La Paz, Bolivia | - | Fatal | 29 |
| 8 Nov 1985 | Boeing 727-23 | Bellevue, Nebraska, United States | American Airlines, Inc. | No injuries | - |
| 29 Mar 1985 | Boeing 727-200B | Mexico City, Mexico | - | No injuries | - |
| 24 Oct 1985 | Boeing 727-200 | Oakland, California, United States | - | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 28 Oct 1985 | Cessna T210NII | Sterling, Colorado, United States | Sterling Air Service | No injuries | - |
| 17 Nov 1985 | Champion 7KCAB | Berthoud, Colorado, United States | - | No injuries | - |
| 20 Jan 1985 | Cessna 152 | Canon City, Colorado, United States | David Howard | Minor injuries | - |
| 17 Nov 1985 | Balloon Works FIREFLY 6B | Englewood, Colorado, United States | J. Robert Pendleton | Minor injuries | - |
| 16 Nov 1985 | Piper PA-38-112 | Ft. Collins, Colorado, United States | Mt. Flyers Aero Club | No injuries | - |
| 24 Nov 1985 | Cessna C-152 | Franktown, Colorado, United States | Aspen Flying Club | No injuries | - |