- Date
- November 10, 1986, 16:54 local (20:54 UTC)
- Place
- Adak, AK
- Injuries
- 201 uninjured
- Phase of flight
- Enroute
- Aircraft
- CGCPJMcdonnell Douglas DC-10N832Boeing 727
- Weather
- Visual (VMC) · Dusk
- Status
- Completed · report April 25, 1988
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- Case key
- 4794
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.
On this page
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
A canadian pacific Mcdonnell Douglas DC-10 (flt 3), cg-cpj, & a reeve aleutian Boeing 727 (flt 724), N832, were clrd to fly at FL 290 on 2 different airways. The airways crossed at picum intxn, ovr the bearing sea. While traveling in nrly opposite drctns at the same alt, the 2 acft passed w/i aprx 1/2 mi of each other, where the airways crossed at picum. The DC-10 crew saw the B-727, but the B-727 crew did not see the DC-10. Picum intxn was located in an area that was byd normal radio & radar range of the ATC controllers (ctlrs). The 2 on duty ctlrs had combined sectors 10 & 11, then had divided the 2 sectors in a north/south configuration, which was contrary to SOP. The incident occurred drg a busy time. The supvr was helping 1 of the 2 ctlrs. The ctlr, who was hndlg flt 3, clrd it to dscnd fm FL 330 to FL 290 & said he told the other ctlr to stop flt 724 at FL 280, when flt 724 was climbing fm a lwr alt. The ctlr, who was hndlg flt 724, stated that he did not know there was an acft at FL 290 when he clrd flt 724 to FL 290.
Aircraft · 2
- Registration
- CGCPJ
- Reported as
- Mcdonnell Douglas DC-10
- Category
- Airplane
- Engine
- P&W JT9D, 42,500 lbs thrust, turbo fan
- Damage
- No damage
- Flight
- Part 129
- Registered owner
- Canadian Pacific
- Airworthiness certificate
- Standard, Transport
- Departed
- YVR · Vancouvr,Canada
- Destination
- NRT · Tokyo, Japan
- Flight plan
- IFR
- Registration
- N832
- Reported as
- Boeing 727
- Category
- Airplane
- Engine
- P&W JT8D, 14,500 lbs thrust, turbo fan
- Damage
- No damage
- Flight
- Part 121
- Registered owner
- Reeve Aleutian Airways
- Airworthiness certificate
- Standard, Transport
- Departed
- SYA · Shemya, AK
- Destination
- ANC · Anchorage, AK
- Flight plan
- IFR
Flight crew · 2
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot, aircraft 1
- Certificate
- Foreign
- Airplane ratings
- Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Left
- Role
- Pilot, aircraft N832
- Age
- 56
- Certificates
- Commercial, Airline transport
- Airplane ratings
- Single-engine sea, Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 18,950 total
Weather
- Conditions
- Visual (VMC) · Dusk
- Wind
- 0° at 58 knots
- Visibility
- 100 statute miles
- Lowest ceiling
- None
- Altimeter
- 29.00 inHg