- Date
- December 9, 1987, 15:58 local (19:58 UTC)
- Place
- Anchorage, AK
- Injuries
- 2 minor, 3 uninjured
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N969JWCessna 402B
- Weather
- Visual (VMC) · Dusk
- Status
- Completed · report August 8, 1989
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- FAA report
- 19871209071149A
- Case key
- 4942
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
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
Drg arr in hvy traffic, reeve flt 726 (Boeing 727) & wilburs flt 304 (Cessna 402B, N969JW) recd radar adzys for visual apchs to rwys 6L & 6R, respectively. Subsequently, both flts were clrd to lnd. At 1555:04, the LCL twr ctlr transmitted that the wnd at the apch end of rwy 6R was fm 340 deg at 9 KTS & the midfld wnd was 330 deg at 7. At aprx 1557, flt 726 lndd on rwy 6L. Aprx 69 sec later, as flt 304 was x-ing the threshold (thr) of rwy 6R at about 100' AGL, the acft enctrdwake turbc (w/t) & rolled sharply to the rgt, byd 90 deg. The plt corrected with aileron & pwr, but the acft lost alt & hit the gnd bfr rcvry. The wnd drg the 1601 wx OBS was 020 deg at 5 KTS. Rwy ctrlns were 700' apart, threshold of rwy 6LWAS 4600' byd the threshold of rwy 6R. The apch ctlr did not adz either flt of the other's psn, nor did the twr ctlr give a w/t adzry to flt 304. Calculations showed vortices could have drifted fm rwy 6L to rwy 6R in as little as 28 sec.FAA hndbk addressed w/t adzy for parallel rwy opns with less than 2500' sepn, but did not address offset thresholds.
Aircraft
- Registration
- N969JW
- Reported as
- Cessna 402B
- Category
- Airplane
- Serial number
- 402B0328
- Airframe hours
- 5,301
- Engine
- Continental TSIO-520-E, 300 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Part 135
- Operator
- Wilbur'S Inc., doing business as Wilburs Flight Operations
- Registered owner
- Wilburs Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · November 23, 1987 · 71 hours before
- Departed
- VDZ · Valdez, AK
- Destination
- ANC
- Flight plan
- IFR
- Airport
- ANC · Anchorage, runway 6R, 10,897 × 150 ft, asphalt
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 42
- Certificates
- Airline transport, Flight instructor, Commercial
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 11,495 total · 1,225 in this make and model · 11,470 as pilot in command · 265 in the last 90 days · 5 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Dusk
- Wind
- 340° at 9 knots
- Visibility
- 90 statute miles
- Lowest ceiling
- None
- Temperature
- 18 °F, dew point 10 °F
- Altimeter
- 28.00 inHg
- Observed at
- ANC, 25 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.