# NTSB NYC87IA202: Boeing 767-232, N106DA, Boston, MA, July 13, 1987

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: July 12, 1987, 22:58 local (Jul 13, 1987, 02:58 UTC)
- Place: Boston, MA
- Location: 42.3629° N, 71.0064° W: Placed by OpenAirDocs at GENERAL EDWARD LAWRENCE LOGAN INTL (BOS), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.3629&lon=-71.0064&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 159 uninjured
- Status: Completed, report May 1, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 30533
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC87IA202
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/30533/pdf
- Page: https://openairdocs.org/ntsb/NYC87IA202

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Airframe/component/system failure/malfunction, approach - iaf to faf/outer marker (ifr)
  - electrical system,electric wiring - worn (contributing factor)
  - autopilot/flight director - erratic (contributing factor)
- Miscellaneous/other, approach - faf/outer marker to threshold (ifr)
  - in-flight planning/decision - inadequate, pilot in command (contributing factor)
  - light condition - night (contributing factor)
  - weather condition - clouds (contributing factor)
  - weather condition - fog (contributing factor)
- Miscellaneous/other, approach - faf/outer marker to threshold (ifr)
  - crew/group coordination - inadequate (cause)
  - interpersonal relations, pilot in command (contributing factor)
  - interpersonal relations, copilot/second pilot (contributing factor)
  - insuff standards/requirements,operation/operator, company/operator mgmt (contributing factor)
  - ifr procedure - improper, pilot in command (cause)
  - wrong runway - inadvertent, pilot in command (contributing factor)
  - control tower service - inadequate, atc personnel(lcl/gnd/clnc) (contributing factor)
  - missed approach - not performed, pilot in command (contributing factor)

## Analysis

DELTA FLT 752, A BOEING 767, WAS NR THE OUTER MARKER (OM) ON AN ILS RWY 22L APCH WHEN THE FLT CONTROL SYS SENSED AN UNCOMMANDED GO-ARND. THE ACFT DRIFTED RGT OF THE LOCALIZER FOR OVR 1 MIN. AT ABT 1000' AGL, RWY 22R WAS SIGHTED TO THE LEFT & A NORMAL LANDING WAS MADE ON THAT RWY. RWY 22R WAS OFFSET 1500' TO THE RGT OF RWY 22L. A BOEING 727, WHICH PRECEDED THE INCIDENT ACFT, WAS CLEARED TO CROSS THE RGT RWY. THE CONTROLLER FAILED TO OBSERVE THE PROGRESS OF THE BOEING 767 AFTER IT PASSED THE OM. THE BOEING 727 CREW SAW THE BOEING 767 LANDING LIGHTS AS THE ACFT APCHD RWY 22R & NOTIFIED THE TOWER IT WOULD HOLD SHORT OF THE RWY. THE DELTA CAPTAIN HAD A REPUTATION FOR DOMINANT BEHAVIOR WHICH TENDED TO SUPPRESS OTHERS IN THE COCKPIT. THE AIRLINE OPS MANUAL GAVE MINIMAL DIRECTION CONCERNING MISSED APPROACHES. THE UNCOMMANDED GO-AROUND MALFUNCTION WAS TRACED TO A FAULTY WIRING HARNESS IN THE THROTTLE QUADRANT.

## Aircraft

- Registration: N106DA (not matched to a registry record)
- Reported make and model: BOEING 767-232
- Category: Airplane
- Serial number: 22218
- Airframe hours: 13895
- Engines: GE CF6-80 50000 lbs thrust turbo fan
- Damage: No damage
- Flight: Part 121
- Registered owner: Delta Airlines
- Airworthiness certificate: Standard, Normal
- Last inspection: Continuous airworthiness, June 16, 1987, 2,217 hours before
- Departed: CVG, CINCINNATI, OH
- Flight plan: IFR
- Airport: BOS, Boston-Logan, runway 22R, 7,860 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 54; flight engineer, commercial, flight instructor, airline transport; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 20,210 total, 1,760 in this make and model, 12,480 as pilot in command, 180 in the last 90 days, 69 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Night/dark
- Wind: 200° at 4 knots
- Visibility: 2 statute miles
- Lowest ceiling: 1,200 ft overcast
- Temperature: 163 °F, dew point 158 °F
- Altimeter: 29.00 inHg
- Observed at: BOS

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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