L-1011 TriStar | Flying Tools

Lockheed L-1011-500 TriStar

iniBuilds · MSFS 2024 · March 2026

3x RB211-524B/B4 IEPR Thrust CAT IIIB Autoland Direct Lift Control Triple INS

Quick Reference

Flap Settings

Flaps 4	Takeoff (light weight)
Flaps 10	Takeoff (most common) ★
Flaps 22	Takeoff (short runway / high weight)
Flaps 33	Landing
Flaps 42	Landing (full flap / short field)

IEPR Targets (Thrust)

Takeoff	1.80 – 1.85 (full rated; confirm via EFB)
Climb	Reduce to climb EPR per charts
Cruise	~1.40 – 1.55 (varies with alt / weight)
Ground Idle	N1 min ≥ 22 – 22.5%
Reverse	Max reverse 20 s max, then reduce

V-Speeds & Performance

Speed	Value	Notes
Vr (Rotation)	~155 – 165 kt	Weight-dependent
V2	~160 – 170 kt	Weight-dependent
Vref (full flap, MLW)	~144 kt	Reference landing speed at max landing weight
Typical Vapp	130 – 145 kt	Varies with weight and flap setting
Normal Cruise	M0.85 / ~490 kt	Long-range cruise
Economical Cruise	483 kt (M0.83)	Best range speed
Max Cruise	518 kt	At 35,000 ft
VMO	M0.95	Max operating speed, do not exceed

Note: Precise V-speeds are weight and flap-setting dependent. Use the PMS or performance tables in the Paper EFB for accurate figures per flight.

Key Weights

Weight	lbs	kg
Operating Empty Weight (OEW)	245,500 lb	111,310 kg
Max Zero Fuel Weight (MZFW)	~337,900 lb	~153,315 kg
Max Landing Weight (MLW)	~368,000 lb	~166,920 kg
Max Takeoff Weight (MTOW)	510,000 lb	231,330 kg
Max Fuel Capacity	~31,600 US gal / ~119,700 L

Approach & Landing

01Plan for a long deceleration; the L-1011 is a large, heavy aircraft.
02Configure flaps progressively; do not rush flap extension.
03Engage DLC on final for precise glidepath control.
04Vref ≈ 144 kt at MLW; add appropriate additive for wind and conditions.
05CAT IIIB autoland available via AFCS; ensure ILS is tuned and AFCS modes confirmed before the FAF.
06Autobrake and automatic thrust control are fully simulated.
07Reverse thrust: max reverse for up to 20 seconds, then reduce; monitor EGT.
08Aim for a stabilised approach by 1,000 ft AFA.

Cruise Parameters

Parameter	Value
Typical Cruise Altitude	FL330 – FL390
Long-range Cruise Mach	M0.85 – M0.86
Optimum Cruise	Calculated dynamically via PMS
Max Range (full fuel)	~6,100 nm (11,260 km)
Max Range (full pax load)	~5,345 nm (9,905 km)

Navigation Modes (Paper EFB)

Mode	Description	Best For
RADNAV	Classic analogue VOR / ILS radio navigation	Purists, short legs
INS (Triple CIVA)	Triple Inertial Navigation System with drift modelling	Authentic long-haul
INS + PMS	INS combined with Performance Management System (VNAV)	Full authentic experience ★
GPS	Modern GPS nav via optional Garmin unit (cockpit unchanged visually)	Casual flying

INS Tips: Align before flight; INS accuracy depends on alignment quality. Drift accumulates over long flights; cross-check with VORs when available. Import SimBrief routes via the map display for batch waypoint loading. INS button logic is swapped when GPS mode is selected; cockpit appearance stays vintage.

Autopilot / AFCS

Capability	Detail
Autoland	CAT IIIB capable; first civil airliner with this as standard
Lateral Modes	Full ILS, VOR, INS tracking
Vertical Modes	VNAV via PMS (when in INS mode)
Auto-throttle	Integrated with AFCS and PMS
Min Engagement Altitude	1,100 ft AGL (recommended)

Direct Lift Control (DLC)

Input	Effect
Push yoke forward	Increases spoiler deployment, increasing drag and initiating descent
Pull yoke back	Retracts spoilers, reducing drag and initiating climb
Elevator	Secondary role on approach: attitude trim

Why it matters: Spoilers change the aircraft's lift profile faster than elevator inputs, giving a very smooth, stable approach with rapid response to small corrections. One of the only civil airliners ever to use DLC; the fuel cost is why no aircraft since has adopted it.

Virtual Flight Engineer

Mode	Description
Manual	Pilot manages electrical, hydraulic, pneumatic, and fuel systems at the FE panel
Autocomplete	Virtual FE handles flows with spoken callouts and authentic switch sounds for each flight phase

The FE station is fully modelled. Autocomplete flows are triggered per phase of flight and are accompanied by switch sounds and voice callouts.

Performance Management System (PMS)

Era-accurate precursor to a modern FMS; feeds the autopilot and auto-throttle.
Computes optimum climb, cruise, and descent profiles based on weight and atmosphere.
Calculates optimum flight levels.
Feeds EER (Engine Efficiency Ratio) limits to the thrust management system in flight.
Only active when using INS-based navigation modes (INS or INS + PMS).
Integrated with SimBrief via the Paper EFB.

Engine: Rolls-Royce RB211-524

Property	Detail
Thrust Measure	IEPR (Integrated Engine Pressure Ratio), not N1
Spool Configuration	Three-spool; faster spool response than two-spool engines
Thrust (each)	~50,000 lbf (222 kN); 53,000 lbf (236 kN) with -524B4 Improved
Takeoff IEPR	1.80 – 1.85 typical (confirm with EFB/PMS)
Takeoff Rating Limit	5-minute limit; reduce to climb EPR after positive rate
Ground Idle N1	≥ 22 – 22.5% minimum
Reverse Thrust	Max reverse for 20 s, then reduce; monitor EGT

Spool Note: Allow adequate spool time when advancing from idle; the RB211 has realistic inertia modelled. Do not snap throttles rapidly on approach.

Typical Flight Profile

Phase	Notes
Cold & Dark	Use Autocomplete FE or run manual FE flows
Engine Start	Realistic RB211 spool-up; allow time between engine starts
Taxi	Set transponder; confirm INS alignment complete before taxi
Takeoff	Set EPR per weight / runway / conditions; rotate smoothly
Climb	Reduce to climb EPR after positive rate; clean up flaps per schedule
Cruise	PMS manages profile in INS mode; cross-check INS vs VOR where possible
Descent	PMS provides descent profile; plan early; heavy aircraft decelerates slowly
Approach	Stabilised by 1,000 ft AFA; DLC active on final
Landing	Vref + additive; reverse thrust + autobrake
Shutdown	FE manages shutdown flows: bleed air, electrics, hydraulics

Systems Quick Reference

System	Notes
Hydraulics	Three independent systems, fully modelled
Electrics	Fully simulated at FE panel
Pneumatics / Bleed Air	Managed via FE station
Pressurisation	Cabin rate: ~500 fpm climb, max 300 fpm descent
Fuel	Cross-feed and balance managed at FE panel
Crew	3: Captain, First Officer, Flight Engineer

Aircraft Overview

Property	Detail
Variant	L-1011-500 (long-range, shortened fuselage)
Engines	3× Rolls-Royce RB211-524B/B4 turbofan
Typical Seating	200 – 253 passengers
Max Seating	315 passengers
MTOW	510,000 lb / 231,330 kg
Max Range	~6,100 nm

Useful Tools & Resources

Resource	Purpose
SimBrief	Flight planning and OFP: imports directly to Paper EFB
Paper EFB (in-sim)	Navigation mode selection, SimBrief integration, Navigraph/Lido charts
FlightSim Dispatch	Historical L-1011 real-world routes with authentic routings and timings
Navigraph Charts	Integrated into Paper EFB

Historical Context

First flight: November 16, 1970
Service entry: April 1972
L-1011-500 first flight: October 16, 1978
L-1011-500 service entry (British Airways): May 7, 1979
Total built: 250 aircraft (all variants)
Key operators: British Airways, Delta Air Lines, TWA, Pan Am, Saudia, United, Air Transat, Cathay Pacific
RB211 development costs pushed Rolls-Royce into bankruptcy during the programme; yet the engine went on to power aircraft for decades.
The L-1011 was the first civil airliner with CAT IIIB autoland capability as standard.

Cheat sheet based on iniBuilds product documentation, developer previews, and real-world L-1011-500 technical data. Always cross-reference with in-sim documentation and the iniBuilds forum for the most current information.